The hogs are fun.  Actually, all the vehicles are fun.  Each have their
strengths and weaknesses.  There are exactly two Halo maps I'll play
online:  Blood Gulch and Death Island.   Well, there's two others that
are a little bit fun so play them for variety.  But BG and DI are my
faves.  I run a server, set Team Deathmatch, and fill them with all the
vehicles allowed.  I like running the tweaked Blood Gulch map that
allows you to drive the hogs from the gunner spot; shoot while driving

I get called a cheater :)  I'm not a great player.  I'm an old fart with
slightly shakey hands now, slower reflexes and the mind of a teenager
when it comes to having fun.   I've seen a few true noobs get on and get
clobbered so badly they want to just leave and forget the game.  They
were trying to explore the map a bit and get to know how things work.  I
often set up a passworded server and have em in, coach em a bit, and let
them just have fun as long as they want to.
Hey, if there are vehicles in the map, they're meant to be used!
McG.