How much responsinbility should parents own of their kids' decision making?

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10 mo
Not legally, but in general if a kid grows up and steals a lot or drinks or just has bad temperment and disreguards any authority. Not by regulation but by essentially personal opinion how much would you say thats a fault of their parents more than the kid?
Updates
9 mo
I guess where I'm more so getting at is with the types of guys who are just very plainly dweebs as in like childish to the point they are whiney and talk almost like a baby. And can't talk about anything other than pokemon or something of the sort. I just notice quite a few of these types of dudes growing kinda hidden away not actually growing in any sort... is there a line we should draw?
How much responsinbility should parents own of their kids' decision making?
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