In general - the demographics I mentioned have much lower birthrates than otherwise healthy and sexually "normal" people.

For example, obese women have a high rate of pcos and other health issues, so they cannot conceive. Obese men have lower sperm counts. Men in general have significantly lower sperm counts these days compared to 10, 20, 30 years ago, therefore less conception.

Birth rates in the west are plummeting and this can be found at the cdc website and un annual reports. LGBT couples are much less likely to have kids, than same sex couple even though you may know some who do.

If you are in the us, 40% of adults are overweight and 38% are obese - stats from 2015. This is why you see all the fat people with kids.

And yes, those career-driver hotties are not having kids either, which is one more reason for the decline in western population.