In general one earns too few points each week to bid on everything every week. Those members who try are just annoying via spurious threads and posts.
I bid on what "I" (*) genuinely want
(*) = anyone I know, I gift a lot
Then its a degree of how much I want, if I really want it then all-in, slightly want it I dial it back. This week, I bid nothing, last week one item I bid 10 and another bid 1, etc.
Bear in mind if I really actually wanted it I can use, you know, actual money....