NTA - sounds like you might be taken advantage of, even if it is for a good cause since the kid is an innocent party in all this.
Doesn't excuse the mother's behavior though. Remind her that you tackle a majority of the responsibilities, and she would have to clean the place no matter where she lived.
If she believes the grass is greener on the other side, politely let her find out. Hindsight is almost always 20/20.
No but you may have limited options. I would explain to them exactly what you stated here - you plan on getting drunk, relax, and have fun with friends. That doesn't mix with babysitting.
Hopefully they appreciate your situation. If they can't, then you will have to decide which is more important in the long term.
NTA - very unfortunate that both your parents are using you that way. IMO, the best thing for you is to try your best to remain calm but firm. Getting upset and loud will not help your relationship with them. If you have to bite you lip, or count to 10 before answering, do it. Sooner or later it will be over and things should go back to normal a little more.
NTA - his ego wrote a check his body couldn't cash. It's why the military are supposed to exercise every day, even if it's light (I served 5 years; wife served 22).
I've been in your husband's shoes; not taking it seriously enough and getting burned when it counted. I regretted it later, and in some respects I still regret it now.
Hopefully he'll use this as self-motivation. If he does, cheer him on. If he doesn't, let him know that you enjoyed wrestling him last time and smile!
My first experience with Linux was in the mid 80s when I was in the service working with AT&T 3B20 and Sperry UNIX servers as an admin. I enjoyed just about every aspect of the OS, but most government, contractor, and civilian jobs required desktop software that Linux either couldn't install or the open source equivalent just wasn't good enough.
Over the many, MANY, years I have kept experimenting with the various desktop environments, but with my current job a large percentage of our servers are Ubuntu or RedHat Linux (although we're being forced to migrate to Windows Servers for many of the same reasons yet again).
That being said, with the ability for many Microsoft Office365 products working well enough as web-apps, my home laptop runs 100% KDE Neon, and with the exception of needing a couple Windows-only programs (which no longer runs on Linux) I'd probably be running KDE Neon on my work laptop as well. If I can ever get Cisco ASDM to work with Wine and/or Bottles, I will be switching over soon after.
The DEs in the last few years are light years ahead, and I am personally very impressed with just how smooth everything works. My hope is to get back to a semi-40 hour work week in a few years and help contribute - not as a programmer, but perhaps as a QA tester or the like.
NTA