ScrewballComangliaQCK Heavy i used lasted 6 months and started peeling. This seems to be about the normal lifespan for all my non stitched pads. Do you rest your forearm on your pad or no? That probably has a significant impact on how long non stitched pads will last for you. TBH i don't see any point in getting a non stitched pad when stitched pads cost about the same.ScrewballQCK/+/Heavy blows but the QCK limited is good. The regular QCK and QCK+ don't have stitched edges and are therefore prone to peeling.
Glorious PC Gaming Race and SlothMat are also pretty great from my exspirience. Artisan supposedly make the best pads money can buy but they cost an arm and a leg.
QCK+ I had used for 2 years has some peeling
QCK Heavy I have used for ~18months + 2 years at work no peeling
QCK XXL going on ~3 years (honestly didn't realize I've had it this long)
I used to rest my forearm on my mousepad the entire time I have a qck+ and qck heavy I did and I still do at work, but at home I have my mouse pad about ~6 inches away from the edge and I have a smaller mouse pad there for where I rest my forearm, this mousepad is a cheap monoprice one that also doesn't have stitched edges and also has no fraying.
-edit-
not that I'm disagreeing with your point entirely though. Mousepads really should have stitched edges at the price point gaming mousepads are sold at.