Because regardless of race, gender, or sexual orientation people from all walks of life should be able to enjoy all of the basic freedoms that are promised to us as citizens. Its not something you 'believe in', it exists and will continue to exist. People don't need to support gay marriage, but do need to accept that gay people that love each other have the right to marry their partner just as any heterosexual does.
Also, lot of people 'believe in' the idea that people should have the same (EQUAL) human/civil rights, which include the right to marry anyone, regardless of sex or race.
People support gay marriage because they believe that all individuals should be entitled to the same rights and protections of marriage that straight people are.
Some people prefer pancakes, some people prefer tacos. Some people like them equally.
This is just an opinion, some people prefer Birmingham and some people prefer London.
Some people favor arranged marriages for cultural reasons. It show extreme respect to allow one's parents or grandparents to choose a mate.
Some people prefer other animes, such as Bleach or Dragon Ball. I guess some people prefer children on steroids to ninja and Shinigami.
Because some people prefer them.
Some people do not like liquorice and prefer other kinds of sweets.Some people do not like liquorice and prefer other kinds of sweets.Some people do not like liquorice and prefer other kinds of sweets.Some people do not like liquorice and prefer other kinds of sweets.Some people do not like liquorice and prefer other kinds of sweets.Some people do not like liquorice and prefer other kinds of sweets.Some people do not like liquorice and prefer other kinds of sweets.Some people do not like liquorice and prefer other kinds of sweets.Some people do not like liquorice and prefer other kinds of sweets.Some people do not like liquorice and prefer other kinds of sweets.Some people do not like liquorice and prefer other kinds of sweets.
I prefer to work in big companies
Some people prefer the opposite sex; some prefer the same sex. I wouldn't worry about that.
Some people prefer to live in cities and be near all major conveniences and close to work.
Well, some people prefer cold than hot. Some people prefer hot than cold.
cause they want too.
It's a matter of opinion, some people prefer Michael and some prefer Justin.