Wrist Fusion Surgery - Unable To Perform Simple Things

I'm 18 and have a lot of issues with some tendons and joints and dealing with pain, especially in my left wrist. I've never injured it. It developed so that there was nothing actually holding my thumb in place and was pretty much dislocated, so I had an operation to take tendon from my arm and use it to stabilize my thumb. That worked fine, now my thumb is better.

However, the wrist has always had problems to. Being in a cast for over two months made all of the problems worse. My wrist got so stiff, most of my physical therapy time was used to try and loosen it up.

I had an X-ray today and my doctor said it's actually gotten a lot worse. There's this moon / crescent shaped bone, and it's dislocating on it's own. It's very out of place now. None of bones in my left wrist look normal. They just grew to be this way.

Anyway, I have three options. One is to just leave my wrist as is and wear my brace, but I don't want to just leave it because when I take the brace off and try to move my wrist around and stretch/strengthen it, it hurts so so much. Another options to take out a couple of bones and form a new joint, which will help a little bit with pain and leave me with some mobility (but not much). Even if I do this, I'll have to get a total wrist fusion in about 10 years. Third option is to just get the wrist fusion surgery now, which will solve the pain problem but my wrist will never move up and down again.

My mother wants me to get the surgery where they form a new joint that leaves some mobility. She said that would be best, since they're always coming up with new technology and surgery and "in 10 years, you might not even need the fusion because they figured out something new!" (Her words, lol)

I don't really agree with her. I now just want to get the fusion surgery over-with already. It'll probably be easier to adapt because I'm a teen, but if I wait, I'll be in my late twenties and needing a full fusion.

Yet, I'm worried that having my wrist fused will prevent me from doing simple little things I like, such as playing video games, sculpting, lifting my niece, get my first job, etc. Will I be able to do stuff like this? I know it seems dumb, but I'm worried about it.

Anyone else have problems like mine? My doctor think all my problems are connect and I might have a genetic condition(s) that caused my body to develop this way. My wrist is messed up, my elbow doesn't extend all the way, one knee is very slightly higher than the other, knee pain, extremely high arches in my feet and hammer toes, etc. It all causes pain, but I can still function. I only take an over-the-counter pain med, but I'm certain it's all going to get worse as I get older. Walking around the store makes my feet swell up and my knee throb. As of right now, slight movements in my wrist cause a lot of pain. That bone that is dislocating itself sort of "catches" on something in there and hurts a lot.