calling vs. folding

[bbartlog]

If you played against people who bet in a very straightforward way (not a lot of bluffing), your 'weak' play may have been preferable to an optimal strategy. Calling rather than folding is often predicated on the idea that there is some % chance that your opponent is just trying to push you off the hand and therefore you have odds to call; if your opponents are not this tricky then the fold makes more sense. Maybe this is what you're seeing. Similarly, if you are playing against people who will rarely fold, it decreases the value of betting marginal hands. Anyway, as I posted before, a weak-tight strategy plays well against blockheaded calling stations, so if that's what you're mostly up against then by all means play it.
You should also consider the possibility that the game you're playing in has gotten tougher in subtle ways. The overall level of poker play has gradually been improving over the past few years, even if a lot of low limit players are still very bad.