I've had mine for years and have had no...
I've had mine for years and have had no complaint.. it self inflates, though it takes a while this is no problem for my routine as i set the tent, roll it out and then mess with the rest of camp- fire, food, and the like- before returning to give a puff or two, if that, before closing the valve and stretching my bag out. i've carried around a repair kit for some time, though i've yet to apply any such associated treatment- and i sleep with a dog in my tent!
i only take a pad for warmth (thus only in winter and such outlining months) and i've always been as light of a packer as i can as i like to cover rough ground/thicker brush and am generally a smaller fellow anyway. though, over the years i have added some kitchen amenities and thus have recently been forced to pack the mattress externally in a manor that creates a catch for the rhododendron, and such, i commonly navigate thus i am curious as to my possibilities of maintaining warmth and durability with a smaller package if anyone has a suggestion within or without the therm-a-rest realm of sleeping pads.
on another, though associative, track.. i have often wondered if my therm-a-rest would have had the life it has if i were one to fold it in half before rolling it up.. i was told, as i agreed with the logic and thus followed suit, that this act would create a crease over time that would in turn wear and "tear." does anyone out there fold, if so, how long has this practice held up for you?