I think friendships can be as serious as romantic relationships for some people. The fit has to be right. It does seem like you put a lot of effort into friendship but then, it also seems to me like (I hope you don't take this offensively,) you are looking for very deep friendships right off the bat.
I think that initial phase of chatting with someone is finding out whether you have enough in common to carry the friendship further. Sometimes, it can be someone we like but, don't have things to talk about every day. Some people here also struggle to respond promtly. We all have our own quirks.
Also- and I hope you don't take this offensively either- you seem to have very specific views on certain things. Which is your right of course. Plus, your right to only choose to socialise with those who have the same views. But, I don't know if that's part of the issue.
I do see it fairly often here though- posts asking: 'Will you be my friend?' I guess it makes sense- looking for people open to making connections. Being up front that that is what they want. Ultimately though- how can we know? Until we both know more about one another- we can't know whether we want to be friends with a person and vice versa. I think it's sometimes wise to wait for a few weeks or months of regular contact to believe we have created a new friendship.
I tend to agree with other members though and I've experienced it personally a few times too. It's safer not to pin expectations on people. It can be really difficult when we feel enthused that something deeper is developing but, even irl friends are unreliable, I've found. I try so hard now to enjoy the experience in the moment. Maybe hope that it continues but, try not to set my heart on it. It's not to not communicate with people but more- to try to accept them on their terms. Some will message every day. Some every few months.