Is it normal to still suck your thumb?

This is perfectly normal to me, im 21 and still suck my thumb, when im watching tv, reading a book anything really, i find it so relaxing especially if im worried about something it calms me down a treat. Better than anti-D's and safer :-)

Being that thumb sucking is free, legal, convenient, drug free, calorie free, effective at inducing calm instantly, nonintrusive (like smoking is), and nonalcholic I think it's a great habit to have and you should consider yourself lucky. Check out thumbsuckingadults.com and you'll find that it's, perhaps, one of the highest populated secrets...LOTS of adults indulge, if secretly.

your constant sucking of thumb is not normal and not at all common

I'm cool with it, but be sure that you haven't touched anything dirty beforehand. Bugs are easier to pick up than you think.

Some people have sexual fetishes about thumb sucking - watch out!

Don't worry about it too much. It's not common at your age, but there are lots of people who do it. My mum is 61 and sometimes she'll start doing it when she's driving to work (usually if she's stressed).

stick a dick in there instead.