I've never checked the Oil in my Car

My Car is approaching 250k Miles and I realized changing my Oil Yesterday that I've, not a single time, checked my Oil.

Oil Light Comes on, I change Oil. Brakes feel funny, I change Brakes.

I do all the maintenance myself.

That's been my general idea of maintenance on this Car and I've had it since 2011.

Besides a Dead Battery and a Window Regulator replacement, no issues with the whip.

Is this bad?