It is worthwhile to spend money for those who are worth it. If you only pay unilaterally, you won't get a reciprocal return from the other party. The longer the time, the greater the contradictions and problems between friendships will be, and eventually they will collapse. Moreover, you must be the first to feel the pain of collapse, and the center of life is not just friendship. The world is so big, aren't there many opportunities to meet friends? Regarding the departure and alienation of friends, I would like to borrow a sentence from Haruki Murakami: Everyone has his own forest, and those who have lost are lost, and those who meet will meet again.