A wise person once told me that when we say Brachos in the morning, we thank Hashem as part of a group, a rabbim: “pok’each ivrim”, “malbish arumim” …etc, but we say say “she’asa li kol tzarki” in singular. With regard to having all our needs taken care of, as individuals, we should feel grateful that we have everything we need. But in relation to others, it’s not our place to decide that they have everything they require. We have to see others as needy so we”ll be motivated to do Chessed and help them, just as HKBH helps us with kindness and generosity.
It would be wise on so many levels for us to spend prudently and behave modestly when we make Simchas and marry off our children. But when we’re giving to others we should give with a full heart and not sit in judgment, deciding that a poor Chosson should be eating only a slice of gefilte fish at his wedding and his lovely new but financially challenged Kallah had better be wearing an old gown that’s already been passed around a dozen times.