RE: does r\c simulator damage transmitters?
"Hahaha"
You will be a long time before you ever wear out the sticks on a radio, and if you ever do, it would be so out dated that it would be time for a new one anyway.
Sounds to like your brother doesn't want you to get a simulator for some reason?
People have been using simulators for God knows how long and I have never heard or read that they wore their radio out (maybe the battery, but not the radio).