I'll say here what I said in Larkin's comments.... No one touches My Dale Earnhardt commemorative plates or my "Don't worry. Be Happy" singing fish! 

Interesting poll. I did a video response. Basically only I can touch and can touch if they ask.

Collector Shame is a real thing, unfortunately. Some people have no problems with casting judgement on anyone who enjoys something they don't understand. The same judgemental mentality behind "video games are for kids" will happily try to convince you that "Transformers/whatever you collect is for kids, you need to grow up". Because some folks just aren't happy unless you're miserable.

It's strange I don't mind if another collector touchs one of my pieces. Because there is a level of respect there they know how to handle it. But if anyone else goes for one it's a different story.

The "No one can see my collection" is a kinda sad option.