I don't have a coherent thesis, but I've been thinking a lot about the connection between the collapse of civil society, the proliferation of loneliness, and the fact that so many children are being raised by transient strangers they have no real ties to. It strikes me as a blueprint for a dystopian society.
To complicate it further, birth control isn't made free for everyone and in many areas on earth, sex education is poor if it exists at all - not to mention that abortion services, if they are legal where you are, aren't always available either - for those times when birth control fails or other complications arise.
I'll also say that most of the "we have too many people on the planet" arose from attitudes looking down on others, often from countries of origin, racism, and the like. We know how to help lower birth rates (widely available contraception and sex education) - but we aren't doing this - and we can feed everyone now, but we (as humans on average) don't put it as a priority - as seen by not shipping surplus to folks that would happily eat it.
We really need to get rid of this mindset, unless we are ok with the occasional population cull by war (we aren't, right?)
Or a pandemic.