Care to share why?
Sure, I will try to explain why.
The biggest reason I limp is to try to control the pot size. Better put, I just want to keep the pot small OOP without a made hand. Especially in loose games I limp, if people are liberally calling pf raises, I'm OOP and have just started the process in building a big pot.
Limp/Re-Raise. I only use this against certain types of opponents. Not to mention alot of people see this move as AA/KK only so it adds a little bit of deception. So many people love to raise a limped pot, either to isolate or just b/c they are aggressive. Limping gives you lots of ways to play your hand.
It encourages people with weaker A's to limp or raise. You don't make money off of these dominated hands if they fold pre flop, limping allows them to come in the pot. People may enter the pot with those same hands if you had raised, but this just increases the chances.
It's easier to play if you miss, you just c/f without anything. This is probably more of a psychological thing. People, myself included, have problems becoming attached to a pot when they raise pf, this helps you just realize you have nothing in a small pot and can fold.
The biggest thing with limping is playing the flop. You have to get more of people's money when they flop TP vs. your TPTK then they get of yours whenever they flop 2 pair/trips/etc.. vs. your TPTK. Basically, you just have to trust your post flop ability, b/c hands like A4s will be in there, where as if you had raised pf it's possible you could rule that out of villain's range.
That's about all I can think of now, my reasoning may or may not be good, I don't know, but it works for me.