In No Limit Hold'em games, I've noticed that when playing in lower level games, other players are much more likely to call your pre-flop raises - very different to what you see in professional games where maybe 1 other player calls.
Even after making a decent sized pre-flop raise of 3-4 BB, it often happens that 5 or 6 out of the 9 players at the table will call the raise, and you are left playing for a huge pot not quite sure of how strong your hand really is. Some players never seem to fold, even with very marginal hands.
In these types of games, is there any point to raising pre-flop at all if half the players at the table will routinely call? I'm reluctant to raise any more than about 5 BB pre-flop because I prefer playing for smaller pots. How do you adjust your playing style in these situations?