Abandonment

Right I'm not too familiar with the theme of abandonment but I've noticed a pattern with how I relate to people.
Some people seem flighty and social butterfly. They spend time with you chatting and then they're off.
Sometimes I feel a slight sadness as I want more time with them and then I think damn am I acting clingy or fearing being abandoned.

Just allow the sadness, when that comes, rest will melt away.

Perhaps it would be beneficial to distinguish between those that are superficially polite and seem to care/listen but are 'fair weather friends' and those who really do care for you. Even with friends there is a cut off point, e.g. if they feel that the advice they give you (especially if more than one is saying the same thing) is not being considered by you then they may lose interest in helping if they see that no progress is made with how you are tackling issues. I mean well in saying that maybe it has not occurred to you that people tend to prefer seeing signs of progress - moving towards solutions - rather than being presented constantly with a stuck record. There are those that stay as they are because of vested interests, i.e. it's how they get attention.

I am not saying you are this but you do show some signs of this, i.e. making several threads on a previous topic without, it would seem, making progress.

Yes I think you are spot on actually. Other people must go through the same things though where they become stuck.
I heard the term fair weather friends recently because I didn't actually know what it was. But I'm starting to realise now and can spot them. That's okay though.
You can see politeness in social gatherings.

I read somewhere that we make only one or two true friends during our lives, the rest are just acquaintances.
If you are a genuine person then you will make genuine friends. Unfortunately genuine people tend to get taken advantage of because they don't see bad in others.