I got tired of the "every other year" need to strip the old coating and apply new and even paid a "painting company" an extortionate amount to do it the last go around, hoping that it would last longer but no such luck. I gave in and replaced the decking and handrails with "maintenance free" products, and am hoping that this chore is finally behind me. As a plus, my wife loves her new deck, all kinds of brownie points achieved. I still need to replace the lattice work around the underneath, that's been held up by the recent incessant rain and the (happily departed) kidney stone.
I've never had much luck with exterior paint, regardless of brand, and now have all exterior trim wrapped in aluminum except for the basement door which is on my list. I built a storage shed 27 years ago and it's held up well, although needing to be power-washed and repainted every five years or so. It's probably due for another coat, and I'm seriously considering covering it with vinyl siding - at 8' x 12', the cost won't be too bad, probably more cost in the trim pieces than the actual siding - as the T-11 siding is starting to look a little shabby underneath the paint. A possible project for cooler weather though.