Depends on your financial situation.  If you can afford an investment that you can afford to lose, wont drive you crazy looking at the price volatility, and ok with not seeing an actual return on investment for a couple of years, then my suggestion is always yes.  yyIMO, the price will keep going up long term, short term after you buy back in you might be in the red and lose some money, but eventually it will go up.  There is still so much room for growth, and so much opportunity.  Still early in the game, and best thing to do is put some money down you can afford to lose and feel invested in the community.  Best of luck in whatever you decide to do.

Also, do you still have the wallet.dat file for your old wallet?  If so, ever think of a brute force app or a password cracking service?  They take a % of the total funds if/when its recovered, but better some money then no money?