My dads OK with computers and has very little problems with them. My grandfather used computers a hell of a lot in his work before he retired and still uses his computer quite a lot for ancestry websites. My mum, while she has some kind of computer qualification, tends to stay away from computers as much as she can (as do my Grandmother and my Nana), my brother also uses computers quite a lot at school and uses it for Photoshop and for walking routes (he's part of some kind of rambling society thing.) So by and large my family usually don't have too many problems with computers. As far as I know, no-one in my family that uses a computer double clicks on anything.