Shitty for sure, but I can't live without my collection of PDFs.
I've used FoxIt before and I like it, but it won't open some of the documents stored under early versions of Acrobat I have. I generally use Corel for some of those old ones, because it will open "anything."
*whispers*
Almost the entire computer network system at work (this is a large company with nearly one thousand retail locations around the globe) was designed and is maintained by Adobe. All our inventory, shipping, transfer, SOP, Human Resource, Intra-and-Extra-location communication, profit and loss daily scoring, inter-office email, company news service, etc is done under this Adobe system. It is horribly problem prone.
Except for our "customer order," "customer installation," "extended service plans," and "customer contact" areas (created by UNIX, very clunky, non-GUI, command line apps which feel like the early eighties in some ways, but they actually work and never seem to hang) our entire system is at the mercy of the Adobe hacks' ability to merge, diverge and script portable documents.
Have a laugh, but this company was sold a "bill of goods" by the business division of Adobe.