There's lots of pluses to a drysuit, especially when you live in a place with either cold water or cold surface temps. Dry suits give you the option of wearing more or less to keep you warm, you can, optionally, use the suit for some buoyancy and most importantly, when you get out of the water you're dry. This means you can do longer and colder surface intervals and on multi-day dives and trips, you aren't putting back on a cold, smelly suit. The undergarments can also easily be washed between dive days for an added bonus.
The cons? They definitely aren't cheap, on a hot day, you can get really, really hot in one and they take time to master and have some additional associated maintenance to maximize longevity. The price tends to be the biggest obstacle, the training the biggest problem once you have them but really, most drysuit divers I know swear by them.
I've always dove wet and what keeps drawing me to a dry suit isn’t staying warm underwater (although that's nice, especially if you do long dives), it's the ability to be able to jump from a dive to dinner without feeling (and smelling) like I absolutely must shower first and then back into the water if I chose.
Remember, you can always use a wetsuit in warmer water or during the summer and switch to your dry suit when needed. If you really want to experience the perks, why not go to your local dive shop and see if you can't test one out?