"a homosexual union is not natural"
The level of ignorance that statment demonstrats is astounding... ALL primates, humans included, indeed all MAMALS exibit some level of and some percentage of same-sex attraction... Even some of the animals that pair-bond for life occasionally do so in same-sex pairs... You gotta suck it up and accept that, no matter how for your head is up your backside, gay is JUST as 'natural' as straight...

"It is completely different and therefore cannot be termed as equal"
Men and woman are completely different... are THEY not equal?