Agreed; it is not worth stressing over. Given that, I have 3 main rules:
1. If a nodes is likely to be helpful to someone, ++
2. If not, no-vote
3. If a node is mean or rude (very rare IMO), --

I am here to learn and am thankful to all of you for making this a wonderful site.
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"That is the best engineering, not which makes the most splendid, or even the most perfect, work, but that which makes a work that answers the purpose well, at the least cost"
--Ashbel Welch, President ASCE 1882