aggression in 6 handed NL

[pokernose]

I have been doing some analysis and it seems amazing what limping does at that game. Take suited connectors as an example (which I don't play often). When I limp with suited connectors my BB/100 (from Poker Tracker) is -24. My BB/100 when I raise with them is +69. The large differences between raising and limping seem to hold for all hands I choose to play.

My analysis would seem to indicate that if I am coming into a hand I sould come in raising. Is there a good reason to limp when playing 6 handed?