Bent fork, is it replaceable?
You have three hazards.  

First, there is some danger that the fork could fail catastrophically.  But if you are religious about inspecting the fork for cracks on a regular basis (and taking action of some sort should a crack appear) then the danger of this is low.

Second, having the wheel pushed back reduces your toe clearance, which can result in nasty spills if your toe hangs up on the wheel.  But there are many bikes designed with less clearance than yours, so this is a personal choice kind of thing.

Third, and possibly most significant, the damage affects the delicate geometry -- the "rake" and "trail" -- of the front wheel.  This affects handling and stability in subtle (and not so subtle) ways.  But if you've been riding the damaged bike for 5 years and not noticed this you've either become accustomed to this or the effect is not strong enough to worry about.

The bike looks like a reasonably popular one in the US, though I can't say about the specific model.  It's possible you could find a damaged one to scavenge parts from, but you'd have to be sure the "donor" bike did not have front end damage.