There was often a dramatic thread interwoven with the comedy and, for me, that's what made the show. There are, to be honest, some 'hi jinx at the front' early episodes that are too silly to enjoy; like the OP, the episodes that I find harder to take are those later shows that descend into hyper-sentimentality, which are mostly from season 8 onwards; however, I also dislike those where bad-punning and shouting (noticeably by Margaret, Potter, Klinger and Mulcahy) replace the wit and character interplay of the earlier shows - something which seems to be down to a handful of writers and is especially in the last three seasons. The finale aside, I struggle to enjoy the last series. There's an interview with Reynolds(?) where he says that you can't say war is hell forever, which should have been their cue to stop while the going was good or get in some better writers.