Actually, considering how low the birth rates in developed countries are, humans would probably (very slowly) become less and less suitable for modern life.
It not only has to be convenient, but also to be sexually selected (partners with that seen as more attractive) or helping with survivability (partners with that live longer and get to reproduce more), which ain't really applicable anyway.
Which is the reason we don't have traits for any other minor "convenience" attribute either, but instead for long standing evolutionary benefits.
Blue eyes, for example.
Is it a choice? Evolution has both "life and death" and "sexual selection" aspects.
And "sexual selection" itself is tied to "life and death" - it just concerns the life and death (or rather: existence or non-existence) of the offspring and not the person.
So, in any case, it has to be big enough to affect whether the person gets an advantage in living more themselves, or gets an advantage for having children come to life.
I was replying to jeromegv's earlier comment of:
> It’s fascinating that most people don’t get that about evolution. It needs to be a matter of life and death, if it doesn’t, then it has no impact.
Death before one has had a chance to do so (or before any necessary utility towards one's offspring has passed) is evolutionarily 'bad'.
Things that help reproduction and success for one's offspring? Evolutionarily 'good'.
The tricky part is that a large portion of ANY human population is, near as I can tell, 'excess'/'hedging' population, and so will be 'doing poorly' in any given set of circumstances. Think of it as 'build time attribute randomization' when there is a random situation picked that people couldn't predict in advance.
That means that population wide, when circumstances change, the portion that is doing poorly vs doing very well can shift appropriately so the overall population survives. It is quite expensive, but seems necessary for us to have survived so long overall with the sheer number of apocalypses we know of (from plagues to invading armies), and the undoubtably countless ones we have forgotten.
This is true of any group or subgroup.
Lower chance of cataracts too.