Well I'm hardly known for my feminist sentiment, although one must admit that the thread has an air of pruriency, regardless of whether it labours under the pretext of being 'tounge in cheek'.
Ultimately, the OP saw a bunch of ladies taking part in a sporting event, decided he liked the look of that, thus whipped out his camera for some jollies.
Despite this, thankfully, not yet being illegal, it is rather reminiscent of the old man and the trench coat. Whilst, I don't think the 'daughter' argument quite flies*, it does seem to be in bad form. Certain thoughts are best kept to oneself, when shared (unless fleeting) the intent comes to mind. Being a bloke is hardly characterised by publishing voyeuristic pictures of unsuspecting women going about non-promiscously, that's just a glorification of self-debasement.
*In all honesty few of us even like that some bloke will have such wanton thoughts about their little princesses - we just repress it as a nod towards maturity.