I no longer feel I am getting value for my monthly sub. After years of supporting the game (from ARR till now) it's clear SE doesn't want to invest in the game any more; and I'd rather not pay monthly just to have my money go towards more failed projects of theirs.

If, and this is a big if, they can release an expansion with a reasonable amount of content (ie: none of this 'wait till 1 year or longer after the expansion to get most of the good stuff/repeatable content) AND reduce the duration of patch cycles while keeping a good amount of content in said patch cycles, I'll re-sub. I highly doubt that will happen though.