I don’t really get it anyway as I come from a culture where you either invite people or you don’t.
BUT, putting that to one side, is this practice outdated now? More people get married further away making an evening invitation costly for what it is (according to what I read here anyway), often requiring travel and accommodation etc. For example, I’ve previously been invited to the evening portion of a wedding of someone I used to work with, we have coffee every so often etc. I couldn’t make the date anyway, but I would not have been offended to have not been invited since we aren’t close enough for ‘whole’ day.
Should we just scrap evening invitations?