What a great little pool!
We had a great big, free-form pool here on this property when I was a kid. It had a diving board and everything. Unfortunately my grandfather let it deteriorate until there were massive trees growing out of the hole. Now we use it as a massive burn-pit when we clear brush away in the Spring. But we're determined to turn it back into a pool again, someday.
Yes pools are awesome but also a lot to maintain and costly. Pretty much the best kids play place in the summer though.