Humidifiers.

It's just a pool of water with a little nebulizer and a fan to blow the mist out a chimney.

Trouble is, they're all made by the fucking plague demon Nurgle with the sole purpose of aerosolizing mold and bacteria by having the tiniest nooks and crannies than cannot be reached to be physically cleaned.

And before I get the "you gotta clean it with vinegar every week" comment, two points:

1. You don't soak your hands in soap and rinse them off and call them clean. You gotta scrub them.
2. Am I supposed to fill a 5 gallon bucket with vinegar to soak the whole water tank every week? Because the chimney goes right through that bitch.

Yeah, why do people blow their noses into PAPER when you can just go to the bathroom sink and hork in your hands, and then wash up afterwards??? Why would people walk around with dried boogies on they face when they can wash?? Why? Why, Mister Anderson, why, why?

Toilets seem to be getting smaller and I’m having trouble sitting on it without my penis touching the front.

For example, I'm incredibly confused about how you're supposedly to measure liquid laundry detergent with the cap. At least the kind that I have sits on it's side, so if you measure it with the cap it just leaks everywhere and makes a mess.

After pouring the detergent into the appropriate receptacle, toss the cap in with your laundry to be washed like everything else. No mess.

Some toilets have a perfectly round bowl so they don't stick out as far and take up less bathroom floor space - and they work fine, but only in bathrooms that anticipate the vast majority of its occupants to be equipped with a vagina. For those of us rocking a penis, those fucking toilets are horrible - sitting on that damn thing requires you to contort your junk around like some sausage-Houdini as you're sitting, so that you can guide it through the remaining 2 square inches of open space not occupied by your legs or ass. Then when you're actually seated, you still have to sit there and awkwardly hold the thing so it stays pointed straight down.

Fuck up any part of that, and the tip of your dick hits the seat or the inside of the bowl.

...and they must be like $3 cheaper than an oval toilet or something, cuz 99% of US apartments seem to be equipped with the round, vagina-only toilets.

Oval bowls are the way. No matter what's in your pants, it gets the job done without the significantly increased biohazard risk.

I guess in fairness, the problem isn't with their design, it's with the people who purchase the toilets treating them as sex-neutral when no the fuck they aren't!

Wine bottles. After thousands of years of drinking you would think humans would develop a bottle design that doesn't dribble down the side after pouring.

I just replaced my windshield wipers last night and it was a nightmare. The wipers I got are supposed to be universal, which means the little plastic bit that connects to the wiper arms has a bunch of little sub parts that you're supposed to remove based on what wiper arm connection your car uses. Well, considering I'm not well versed in modern wiper arm connection standards, and I'm also stubborn and don't think you should need to dig out your car manual just to change your fucking wipers, coupled with the fact that the instructions that came with the wipers are just 6 wordless diagrams vaguely showing you what bits to remove based on which esoteric wiper style your car uses, I struggled with those sons of bitches for like 20 minutes in below freezing weather.

Countertops should be just a couple of inches higher, they are calibrated for a 1930s housewife but most of us aren't 5'2" and it's easier to stand on a stool if it's too high than to stoop because it's too low.

OP I hate those low ziploc bag openings too, they are so stupid.

I can't seem to pour out of my pyrex measuring glass without the water dribbling all down the front of the spout making a mess. You think they could have shaped the spout to prevent that better and it infuriates me every time.

Reusable water bottles, especially their lids. They build up microorganisms faster than a petri dish and the more complex the bottles are, the worse it is.

Worst offender are the ones with integrated straws. Sure, they look nice and are a good idea, but cleaning them thoroughly is a nightmare. Also, I don't know how people tolerate the ones with exposed straws or mouthpieces. Isn't that incredibly unsanitary?

More generally, why doesn't anyone except for Nalgene make reusable bottles without rubber gaskets? Gaskets get stinky, then you have to peel them out, scrub like mad, and then awkwardly stretch them back in. I've been looking for a metal water bottle without a gasket for ages. They literally just need to shove the Nalgene-type screw-on top into a metal body.

Bonus points if someone designs a gasket-less bottle that opens in the middle so I don't have to fiddle with a bottle brush every time I wash it.

Everyone seems to have a cup plunger made for sinks next to their toilet instead of a toilet plunger near their toilet.

A toilet plunger has flanges:

I have seen this plunger close to zero times when visiting people and using their bathroom.