Take them out camping, hunting to haul the kill back, fishing, any longer trips where we have to take stuff, hook a small trailer up to it and use it in the backyard, take them out for fun on riding trips, had to build a barbed wire fence one and used them to haul the stakes and fencing.
Theyre nice becuase you can take more and heavier stuff with you and its a little easier in most terrain that you will be dealing with. On my bike I can go pretty much anywhere, just depends on how, but with the quads I'm a little more limited but most of the stuff is easier.
They work hard but are still fun to take out and bullshit around on.