Yes I've gone decades at a time without meds. Sometimes I was okay and sometimes I wasn't. The problem was, there was no way to predict when I would need meds and when I wouldn't so when I got sick, I ended up VERY sick, and made some very bad decisions and did some things that were totally out of character for me.
I don't feel that my meds affect my intelligence. I guess it's just a personal thing. I need my sanity and if it leaves me a little slow, well I guess in the end, it's a good trade. I have kids and just cant take the chance of getting sick again.
Taking meds is a very personal decision, and in the end you have to do what you think is best. Good luck to you, I hope it all works out.
Good judgement comes from experience and alot of that comes from bad judgement.
You just have to accept that some days you're the pigeon, and some days you're the statue.