It seems very very different for different people I guess...
I use my drysuit for about 50-100 sessions a year, for many years the same suit often.
(have bought a new one this winter though, lovely)
Dont take much care regarding rinsing or cleaning or anything, just leave it in the car, or sometimes take it inside to dry up a bit - thats it
When out as often as I am, I dont want to use extra time for "babying" my suit (the same goes for wetsuits)
I dont like the latex gaskets though, so havent been using these at all the last many years, but only the neoprene gaskets and sometimes latex socks - but this is simply personal taste I assume (and you have to be more carefull with the latex)
The reason we use drysuits here, is not to cope with "extreme" conditions.
It is because a drysuit is so much more comfortable regarding changing and wearing, and faster to get in and out compared to a winter wetsuit - and it feels very light and free when on the water.
Combined with the option to change earlier - and you can walk around for as long as you want on the shore/beach without getting cold, taking breaks, rigging another kite etc (NOT possible with any winter wetsuit - here you have to be quick in and out and change back to normal clothing again - but this will work fine too of course).
We are so experienced with drysuits after many years, so the choice of drysuits is not because it is warmer when out on the water - but for many other reasons as stated above.
That being said - it is lovely to get back into a wetsuit again too, for other reasons (no bulkiness at all he hee), even though many disadvantages.
Just like the changing seasons maybe - it always feels good with a change, no matter how good the "present" is
So no, here we can not reckognize your bad experiences with the drysuit...
But we have lots of both good and bad experiences about many details we can share, but maybe not what this topic is about, right ?
Most of us, out a lot and often, has eliminated the two problems you guys mention, by choosing front metal zippers, and neoprene gaskets
But many others have no problems with these, depending on use and personal knowledge/care of course. As latex will be more dry, true.
Kindly, Peter Frank