So you shouldn't really flatter yourself that they want to be your buddy. They don't. Generally. They want you for some reason or other, and you just have to fend that off all the time. ↗
It is common to distinguish necessaries, comforts, and luxuries; the first class including all things required to meet wants which must be satisfied, while the latter consist of things that meet wants of a less urgent character. ↗
When the characters are really alive before their author, the latter does nothing but follow them in their action, in their words, in the situations which they suggest to him. ↗
Not to sound egomaniac or anything, but just to get under people's skin like that, and for them to believe in you and believe strongly enough to write... it's flattering and it helps you during the day. ↗
We often choose a friend as we do a mistress - for no particular excellence in themselves, but merely from some circumstance that flatters our self-love. ↗