I've been riding motorcycles (street bikes and dirt bikes) since I was 13 or 14, and love it. However, I wouldn't want to have a motorcycle as my only daily transportation. There's no reason I can think of, why an Aspie shouldn't ride. Most of us are more cautious and sensible than NT people anyway. And as far as "biker type", neither am I. I think in 2010, there is no "biker type" anymore. Heck; I was a library nerd, and anything BUT a cool biker. If it's something you want to do, GO for it!! ! But be safe, and know your limits. Don't ever get too confident for your experience, or jump on a higher-skill level bike than you are ready for. If you obey that rule, you will have plenty of years to get the experience you need.
If it's cost you're thinking about, you might want to do some figures, and check the cost of insurance. In many places, motorcyclists pay higher insurance rates than car drivers, and you can't really ride in foul weather if it's your only transportation. So you might wind up paying cab or bus/train fare along with the cost of having the bike.
Charles