My preference, when creating D&D characters, is to have no, or minimal, background details. I think this is common to most people who play older versions of the game, because bitter experience shows there isn't much point wasting time creating a special snowflake PC given they have a 75% chance of dying before level 3.
This is one reason why outsiders are sort of snooty about old versions of D&D, I think.
But there's a good, sensible in game reason why not having detailed character backgrounds makes sense, at least in D&D. And it's this:
People go off and do crazy adventurous things when they have no responsibility and no ties. When I was 18 I went off to Kyrgyzstan for a few months to volunteer. When I was 21 I graduated from university and hopped on a plane to Japan with the intention of working my way around the world. I did these things because I was young, single, and fancy free, and didn't feel any real connection with where I grew up. In D&D terms, I had no 'character background' - you could have summed me up in one sentence (probably even less than that). I was a "Level 1 University Graduate". It was only after I'd lived for a while that I started to get anything like an interesting background worth speaking about - in other words, it was only after my 'adventuring career' had started that events in my life became worth cataloguing.
This would be even more true for D&D characters. In a typical D&D setting, life is nasty, brutish and short, and not only that - there are actual fucking orcs out there that will skin you alive if they catch you. The people in such a world who would be starting off an adventuring life would be, not to put too fine a point on it, young, dumb and full of cum. They wouldn't have interesting and elaborate back-stories tying them down to home and hearth. They'd be wet behind the ears. They'd probably be the youngest child in the family with nothing to hang around for. They might be orphans or urchins for whom the adventuring life is all upside (the alternative is dying in a gutter with leprosy). These are not the sort of people with interesting back-stories. It's when they set off into the dungeon that their lives really begin.