I go swimming every now and then, usually during the weekend. I get so fed up with people (especially with children) that play in the 25 m pool in the middle of the pool, swim across without looking if there are swimmers arriving the other way, play with a ball, take up lots of space for "acrobatic" swimming.
I am not a fast swimmer, but I like to go for just 30 minutes to exercise, to do a few laps. There is never a lane designated for lap swimming. And even the instructor make the little student swimmers go across the pool, not along the 25 m length (I understand why - the depth changes across the 25 m, but not the other way, so the little swimmers are safe when they swim in the shallow end).
Nobody else gets annoyed at this? Am I just getting old and grumpy?