I am a Muslim and I have some non-Muslim friends who support the LGBTQ community and they are curious about why it isn't allowed in Islam. What is the explanation, that I can share with them, for its prohibition?
It is not only Islam, but all other messages from God like Judaism and Christianity, don't allow any act which can harm the future of human kind. LGBTQ people claim that every one should be free to fulfill his sexual desire in any way and they don't consider the consequences on the human society and future. Desire itself can never be taken for granted to do anything for lust. Some people might have some sexual desires towards a family member like a real brother or a real sister, so can that desire allow such act? Unguided desire can deviate human being from the human values.
Wassalam.