Jim, you might do a search on the subject - there have been endless threads on the subject. As long as I am here, yes, I shave both.
Reasons:
1. Peer pressure (most won't admit to this)
2. Looks better
3. Easier to massage
4. Easier to slather on sunscreen before and lotion after showing
5. Makes it a bit easier to deal with road rash
6. Peer pressure