I did mine just over 10 years ago at 30 years old. I was a devout fast car man but commuting from Sailsbury to Blackpool every weekend for years changed me. I used to sit on the m5/m6 junction in jams just watching the bikes filtering through and just thought how stupid I was not joining them.
I did a 4 day 'crash course' which I initially failed, then got an opportunity to do my restricted test in the Army, and passed on a 350 Harley Davidson a week later! (those things are nasty!)
I'd already bought my gold boxeye, and luckily had an airfield to ride around, practicing for my unrestricted test which I took a couple of weeks later and passed! Got rid of my car, gone purely two wheels only ever since.
Covered about 250,000 miles since passing, and still get that tingle every time I get on the bike.
I get told quite often that I'm not wired up right as I roll into work piss wet through in sub zero temps. I just tell everyone who asks why I do it, "Every minute in the saddle is a minute well spent". Its a way of life!