Yeah, quads are lot cheaper in so many ways. I will probably never own another rc again but I do enjoy and love the fab work, design, and tech that goes behind it. I am always happy to grind or help someone work on their junk too.
The biggest downside to utility quads.......not much you can do to them. Intake, Jet, Exhaust, tires, wheels, and thats pretty much it. So if you like spending tons of money building a rig then quads arent for you. That sounds wierd but I remember the feeling I got working OT and saving up for gears, lockers, etc. It was a lot of money thrown away but it was fun while it lasted.
The biggest upside: When you are riding you have so much more freedom. You can see all the landscape around you, the wind through your clothes, and you can get into a lot more areas. If you get stuck, just get off the rig and pull it out with your own two hands.