I'm in between those. For many years, I tended to wait until the gas warning light comes on. Once I even let it go too far and stalled. One of the nice things about having an 18 year old car is knowing how far I can go with the warning light on. But in the past year, because my driving routine has changed, I get gas sooner because I like to get it at a certain gas station near my grocery store. So if it's grocery day and my tank is at ¼ I'll get gas. Not stressed, but just because I'll be passing my preferred gas station.
Yes, I do know about the symbol indicating which side the tank is on. Learned so long ago I don't remember when.
Something strange in this image! The F and E are switched. I'm sure in my car, at least, F is on the left and E is on the right.