The refrain is very touching in its simplicity, underlining the unnatural restrictions put on males from boyhood on.
I like this poem, though I'm not keen on giving scores. The tragedy comes out very poignantly at the end.
You have been bold to write four-line verses with all lines rhyming, and you have succeeded pretty well in making the rhymes natural; the refrain works well too. This is a good, atmospheric piece, and you should be pleased with it.