Great... now movie posters are sexist?

[robvalue]

I agree with this too. People are growing up way slower these days. I'd prefer it to be 21.

I'd prefer it be based on maturity as in one's capability of handling responsibility, instead of just physical age

Ideally sure, but that would be hard to regulate.

If you're thinking of aptitude tests, I think that's also ideally a good idea, but I would expect uproar.