Pair 2

It is worth paying to see the flop with a pair d 2 in hand ?

Sure, a pair's a pair. Ok, twos aren't much. If you can get in cheap maybe hit a set. Sometimes you get lucky and no one else wants the pot and your twos take it.

I would say yes since any pocket pair is a good starting hand

2 pair is a pair down, more vc hitting him on the flop he becomes a monster , the more the pair is a pair of 2 rui u will only have two out, and nothing else ! often the move is call in pre flop and the right not nothing then and fold !

I like small pairs, one 2 more on the flop and have a good hand ,difficult to trace

I think it depends on how comfortable you are with post flop play in addition to your position. With that said, pretty much any time you know for sure you can see the flop for cheap is worth going for it and pretty much shooting for a set and dumping when you miss unless you feel you can comfortable navigate the post flop streets with just a small pair

With pocket pairs 2 - 6 I usually play only if I can see cheap flop and I not need pay more than 3 BB.

Paying to see is a fine play when your stack is 30bb+ given the right situation and the price is cheap. Deeper make the call more liberally esp with position or closing the action.

No when you have pair in your hands you always have to pay the blinds to see the flop you don't know if you can make a three of a kind or full , I always pay the pair of 2 because it always appears to me at the flop and I always win with that hand , any pair is good to see the flop remember that