Because it works! Limping with suited connectors and suited aces has been working wonders for me tonight, I went down 2 buy-ins on bogus beats (KK vs. A7s pre flop beat by flush, trips called by a all in flush DRAW), and from there I just started limping to try to see a lot of flops, and it's worked wonders. I've also found that I'm risking less, not as often am I trying to c-bet to try take down pots, of course I still have to, just not as often.