Os: +0.5x-0.5, od: 0x-0.25 after lasik. am i now farsighted? how's this going to affect once presbyopia kicks in? would've been better undercorrected?

Great result: But you'll need reading glasses just like everyone else when you're in your early 40s.

No: You now have essentially no refractive error and will need reading glasses in the future, if not now. Assuming you were myopic before surgery, had you been undercorrected your distance visual acuity would not be as good as present and you would have pushed off the need for reading glasses for a period of time.