I would say with Games/PE it's often the method of teaching that makes it the waste of time not the subject.
Team sports in Games. The constant emphasis on team this, team that. Some kids (I was one of them) will not Get Them (or be picked for them). And as a result will get turned off any exercise for life as the school message is Team.
What is needed is to discuss with kids what options there are and why we do it. DS's Games teacher once said to me that there are kids who will always be sporty, will do everything going, are in the A team for this and the A team for that. Those kids aren’t the ones that make his job worthwhile. It’s the ones that hate sport, trying to get them to engage.
I’m not naturally team sport orientated. I’ve spent most of my adult life overweight, and female so there’s two things against me. Sports at school should have included talks on getting good sports equipment such as proper supportive bras so that I wouldn’t have been uncomfortable running at faster than walking pace. Not having communal showers. Or making kids go out for cross-country in woefully awful weather. Having sport where being on a period was seen as something to be gently and supportively aware of not shouted at for (yes, I’m looking at you Head of House before the swimming gala!)
Giving Games/PE a point should, to me, include telling children that there’s a point in fitness where it becomes a lot easier to move. There are things for everyone – especially the non-team-sport folk. For instance Squash, badminton, tennis (in conjunction with local clubs who would see it as a chance for more members perhaps), table tennis, golf…
I'f I'd have known about the fitness threshold and proper kit (which to be fair probably wasn't available back then, so it was usually the thin or less-endowed on top girls who were sporty), perhaps I'd have been enjoying running for the past 30 years of adult life, not just the past two.