Depending on what you're treating, 50% sounds pretty good.
I remember when I went for my last surgery and I was signing all the consent forms, my doctor was emphasising the 17% chance of this known lifelong complication, and the increased 4% chance of general anaesthesia fatality (compared to 1 in 10,000 for general public).
My mum was freaking out because when she had the same surgery she'd been seen much earlier in the disease process, she wasn't expecting such a "high" risk of complications in my care.
But all I was hearing is that there's an over 80% chance it will be a success. Considering how limited and painful my life was by the thing we were treating, it was all no brainier, I liked those odds. Plus my condition is diagnosed 1 in 100,000 people, so how much data could my surgeon really have on the rate of risk, the sample size would be laughable.
Still the best decision of my life, my surgeon rolled his skilled dice, I had zero complications (other than slow wound healing but we expected and prepared for that). I threw my crutches in the trash 2 years later, and ran for the first time in my life at 27 years old after being told at 6 years old that I'd be a full time wheelchair user by 30.
Every time I do a Bunnings BBQ for the community centre, it's women run, we get the onions on ASAP because they need time to cook, and we'll have people buying a plain onion sandwich in addition to a snag, because caramelised onions are so good!
Every time I volunteer to help my partners football club run a sausage sizzle, I'm saying "put the onions on, they take longer" and I'm told by the guys "I'm a man, I know how to BBQ, go away little girl, go hold the sign and be pretty"
Then everyone buying a snag is complaining about crunchy raw onions, and the guys are saying "why did we buy so many onions?" (because you were supposed to cook them down so they shrink!)
These same men will unironically say "women belong in the kitchen" then won't take cooking advice from a woman.
(also, the footy guys always giving me flak for deglazing the BBQ plate with water to help the onions cook down faster. They'll just keep adding oil, once saw a Rotary Club use 1L of canola oil to half cook 5kg of onions, when we've never needed more than 200ml to fully cook onions, because onions need water to cook down!)