Like any piece of equipment, it requires some getting use to. Why bother?
1. If you're diving in cold conditions, it's
much warmer;
2. It allows you to breathe normally, allowing the diver to be more relaxed;
3. No jaw fatigue during long dives;
4. The mask/helmet is more secure (multiple straps);
5. Provides the ability to communicate topside or with another diver;
6. Increased safety in-case of loss of consciousness.
I don't buy the reduced visibility argument, although I can't say that there aren't FFMs that don't restrict vision. This just isn't my experience, having used one commercially for the last 37 years.
FFMs have many benefits, but I'd agree with those posters who've recommended that the OP first gain more experience. It wouldn't however surprise me to find increasing numbers of recreational divers using them.
Like any piece of new equipment, I'd recommend that a diver spends an ample amount of time in the pool before going into open-water. Get a person who's experienced in using one to give you a hand.
As it's no longer cost prohibitive, recreational divers can partake in the benefits that commercial divers have enjoyed for years.