Leaving aside the maths discussion and returning to the original question -
As most have agreed, it is standard to limp in with suited connectors hoping to see a cheap flop. Also, one can raise with them if first into the pot, hoping to steal the blinds, but with outs if you are called.
There is a third way of playing them, I suggest. In a deepstack ring game, or in the early levels of a tourney when the blinds are still low in relation to the stacks, it is worthwhile to call a standard raise with them from late position. You are looking to set up a situation where your preflop raiser hits the flop or has an overpair and will pay your straight or flush in a very large pot.
Note carefully that this play is only sound if both you and the opponent have deep stacks. It will not succeed often and must pay something on the order of 40-50 BBs to compensate for the more common result, which is that you will lose 3-4 BBs.