Every response so far is pro drysuit.
Typical scubaboard.
How about this,
Diving wet is a lot sleeker, there's no baggy fabric interfering with a smooth slipstream.
Wetsuits are way less prone to problems such as torn seals, faulty zippers, holes and leaks.
Wetsuits don't have catastrophic failures.
Wetsuits can withstand a lot more abuse and are easily repaired.
Wetsuits are way cheaper both initially and in the long run. Even a nice custom suit is less money than a nice drysuit.
I think drysuits are overpriced and a ripoff.
I have some very nice custom wetsuits that I use in 45 degree water when it gets that cold here.
People who constantly bash wetsuits don't know much past what is available off the rack in a store. There is a whole separate world once you get into the custom world, better neoprene, better fit, better designs.
Urchin divers around here dive 5 to 7 hours a day in freezing cold water in wetsuits. They are used to it.
If someone is comfortable in a wetsuit there's no reason to go into a drysuit unless you want to waste money.