I didn't mind people touching my belly, but then almost no one (except of course DH ) touched it. A few friends touched it after asking but no strangers.

Oh I did have this one customer at work though. We had been chatting away about Halloween and costumes and she was super friendly. When i told her i was going as a pregnant nun she got all excited and reached out to touch my belly. Before she got there though she snatched her hand back and looked sheepish and said "whoops I guess I'd better ask first" so of course I let her. She was so happy.