I was eight, my uncle gave me a cheap 3/4 classical guitar and I had lessons on that up until I was 12. My teacher at that point refused to keep teaching me if I kept playing left handed because I "wouldn't fit right in an orchestra" and that turned me off for a few years after I tried playing right handed and didn't enjoy it. Got an electric (Epiphone SG) for my 16th birthday and played a couple hours a day on that for the next few years. Was in a few bands, made a few quid, sold a few CDs, had a blast! Still have that SG 15 years on, will never part with it. It's fallen out the back of a moving car, I've had to scrape my blood off it once or twice, it's got real history!
Played mostly acoustic in my 20s and picked up the uke when I was 24ish. I enjoy playing the uke and find relaxation in it in a way I haven't with guitars for a few years. Playing the uke has made my guitar playing a lot better as well. If I had to pick one it'd be uke hands down but I'm very glad I don't have to pick one.