> There are counter examples like I mentioned above but they are rare.

Those counter examples you mention also behave this way (and you likely do too), it's just they enjoyed your company and were willing to reciprocate. Those who didn't aren't clueless or anti-social, they just weren't willing to reciprocate with you.

> It took me way too long to realise that quality >>> quantity regarding relationships.

That is true, but be careful in defining quality as equal effort. You will self-select for people for whom friendship is transactional rather than emergent, and those "friendships" (in quotes because many including me would consider those to be acquaintances rather than friends by definition) tend not to endure hardship, where friendship by definition becomes unbalanced in effort.