My mother has come to trust me with ours, since I know more aboout it anymore than she does. Plus, it helps if you talk WAAAAAAAAAAAAAAAaay over there heads when you try to convince them to let you do something.
It's the complete opposite for me. My grandpa won't let me touch his computer unless I give him comprehensible instructions on what I plan to do there.
Me: Can I use your computer?
Grandpa: What for?
Me: I wanted to download an RPG so that I can review it and give comments on Crankeye.
Grandpa: You're downloading WEAPONS?! On MY computer?!
Me: No no no, you see, an RPG is a...
Grandpa: You're never touching my computer again!