I have never had a bad experience with an early access game. I generally only buy early access games from indie studios I am already familiar with, and have never purchased an early access AAA game. I genuinely enjoyed the early access aspect of several games, playing them through different stages in development extends the playtime in my opinion. Every new update feels like free DLC, but the game I purchased felt complete already. In my opinion, early access is far better than kickstarter for games, since at least there is a game you are purchasing and gameplay footage is publicly available, but sometimes these are legitimately the only ways to fund a game.