Am I wasting my time here?

[Whitey]

It seems every time I get aggressive around the bubble in a $10 rebuy it backfires on me, should I reserve my bubble play for higher buy in tournaments where people are capable of folding or is my timing just off?

Stars $10 rebuy, 55 left 45 pay, I have 80k which is good for 7th place, BB barely has me covered.

BB has open raised 5 or 6 times in last two orbits, I havn't played a hand since moving to the table 10 mins ago.

Blinds 2k/1k with ante.

Folded to me on the button and I raise to 6k with A3o, BB re-raises to 18k I push, he practicaly insta-calls with AQo and IGHN