Quote
JamesJM
All the current contract in's and out's mean to me is that it forces every team to re-shuffle the deck every year, or few years... and serves no useful purpose whatsoever. - JamesJM

Well it does serve a useful purpose though.

A hard cap means rich teams can't buy all the talent.

And that kind of level playing field, at least when it comes to financial matters, means parity. It is true that some organizations are clueless and can't take advantage of it, but many can every year, which means tight races and a general "any team can make in a given year" vibe. That keeps the game enjoyable and interesting. It's one of the strengths of the NFL.