POKER - Is it best to sit out your blinds?
No.

You can't re-enter on the button (or the small blind)(at least in any game run by sensible and fair people). This would require moving it past the player who has just been in the hands where they paid their own blinds, denying them the position opportunity you are trying to aim for.

The earliest you re-enter is one before the button, defeating the purpose of sitting out.

If this was a viable strategy, everybody would repeatedly do it, paying both blinds on the button and never at any other time. Clearly this doesn't happen.