Not unless you're such a short stack that you're pot commited by the blind.

If you make it into the top 3 and you have a decent stack, you can be much more selective than that. Any pocket pairs and A high kicker (and maybe K high kicker) are the best all in hands in my opinion. Other hands deserve limping in from the small blind (or min raising), or calling small raises on the BB.

Any pair on the flop (including middle and low pair) deserves an all in push if you think they missed the flop, as does a flush draw or open ended straight draw if you think they missed the flop.

Its hard to really describe how to play in detail, but I don't think a Q5 or K3 type hand ever deserves a preflop all in. You'll only get called when you're a dog, and that's not a good thing. The only exception I'd make is if you know that the opponent is almost sure to fold (i.e. you know he only limps in with a weak hand and will fold to a raise).