Yeah, the sandbox fantasy of the previous titles didn't have this restriction.
Considering that cracked files have shown that aging can be toggled on/off under the hood, it's not the coding nightmare that those who oppose the option insists it is. Plenty of things can already be done to significantly alter the balance of the game as is. Battle death on/off, difficulty settings, etc..
Giving people the option to play this like the previous Mount & Blade titles should be a core part of the experience. It IS supposed to be a part of the same series, after all. Plenty of people here who like the aging often cite and reference Crusader Kings as an example of why it's great/why they want it. You can deny that if you want, but look through the posts and you'll see people talking about wanting it to be like CK.
As of right now, the implementation of the aging/heir/procedural generation system isn't even working in context of the gameplay loop. The recent snowballing problems render it pointless. Once aging death is functional, we're only getting the baggage of it.
If I want to take my time and level smithing, do the side quests, build relationships and rivalries, I shouldn't have to put aside my time to invest in a feature I have no interest in because they've decided to implement restrictions that results in a finite amount of time in-game for my character. I don't give a **** about your immersion or kids. Play house if you want. Let me avoid all of that.