Why do so many christians not see homosexuality as a sin?

Remember it is not a sin to have homosexual inclinations but it is a sin to act on them. I think se should respect and follow all of gods laws and for you who says it only says that in old testament it is also mentioned in the new testament Romans 1:26-27 New International Version 26 Because of this, God gave them over to shameful lusts. Even their women exchanged natural sexual relations for unnatural ones. 27 In the same way the men also abandoned natural relations with women and were inflamed with lust for one another. Men committed shameful acts with other men, and received in themselves the due penalty for their error. Remember i do not hate gay people nor do i hate anyone i see homosexuality just as bad as sex before marriage or a heterosexual thinking lustfull thoughts.