I had a honda Cr85 when i was 14. Ended up with a 125 engine after one of my mate blew the engine :/
Anyway, long story short you can have great craic offroad. I used to use mine every day but i live in the Country in Ireland
Ended up with a hairline fracture on my spine, which was bruised to c7 (a third way down your back), a snapped collar bone which almost punctured my lung and meant i had to be airlifted via helicopter, badly bruised legs and scratches everywhere.
I was saved by my helmet which had very deep gashes all over it and the rest of my gear which i had just bought new was cut off me.
What im trying to say is get one for the fun of it, but you wont find it fun driving like a granny on a honda 50.
Doing 90+mph when i hit the ditch is what got my adrenaline going. You just have to be aware of the consequences