Leaving aside weird stuff like $150 goggles (you're being seriously ripped off there), what exactly is odd about swimming at 2pm on a 40 degree day?What, so your group is the only one that exists?
There are plenty of arseholes with their 150 dollar goggles and Speedos and swimming caps who treat it like some serious hobby. There's a lot to be said for being chill about it and going for a swim and putting your head down, doing a few laps, then getting up and leaving. Then again Victorians have to be the most uncool swimmers around (all this "going to the beach for the weekend" mentality has resulted in the oddity of swimming at 2pm on 40 degree days, bringing about three backpacks to the beach...) so maybe it's a moot point.
And chargers 09 is right. It's like someone who sketches a few lines and anoints themselves as a poet at a party. No you aren't. You write poetry, but you're not Henry Lawson. Nobody calls themselves a "tram user" like some kind of badge of honour. You just use the tram. I walk everywhere, don't drive, and I don't call myself a "walker" or "non-driver."
It's like, people who define themselves by their hobbies or interests, i.e. I'm a "swimmer" as opposed to being someone who "likes to swim" or "go for a swim" is more connotatively lame. It's like, it's not the phrasing exactly, it's mostly the fact most people who call themselves "swimmers" or "cyclists" take themselves really seriously and act like just one thing in their lives is some really interesting, important, defining element.
But you have a chip on your shoulder too. The only difference is I take this forum as a piss-take.