I'm still limping along with an aging and increasingly creaky copy of Creative Suite 6, because Creative Cloud is blindingly expensive and an enormous PITA.
Looking ahead to when CS6 will no longer work, Adobe's rapacious CC pricing seems to be creating opportunities for others. There are several very decent cross-platform, multi-layer photo editors out there now at a range of price points -- especially if you don't need PhotoShop's more obscure features. I've also been impressed with the downloadable version of Gravit Designer as a simpler but capable alternative to Illustrator.