Apologies to the OP as this is probably thread drift... So, there it is. Most people that ride a bike are competitive. No one wants to be the slow one. No one wants to be dropped. We want to keep up with our friends and significant others that we are riding with. That feels good. Being the slow poke that's always far behind others feels bad... especially if you are the slow poke AND you are suffering. It's just that simple.
We do have choices, though. We can get our heads in a good place where getting dropped doesn't hurt -OR- train hard enough to get better -OR- ride alone -OR- find someone to ride with who is at our skill level. But getting mad at the people that ride better than us isn't really a great choice -- it's choosing to be frustrated and blaming our frustration on someone else. I know, 'cause I almost gave up on riding using the excuse that DH was leaving me all the time. It wasn't his problem, it was my frustration at being a slow poke,
From OP perspective, sounds like DH is stuck in that place many of us are or were -- just mad and maybe not even knowing why, but probably because he is getting "beat" by DW.
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"I never made "Who's Who"- but sure as hell I made "What's That??..."