Why do people feel so opinionated to life situations that don’t apply to their own?

Everyone is entitled to their opinion, I get that. We live in the United States of America and have freedom of speech, but why would one person speak on a situation that cannot relate to them?

For example:

I have a brother who graduated from San Francisco State University in 4 years with a Bachelors degree in business. He went and worked for an interior design company in the Netherlands right after college and is now back in Reno, Nevada, co-owning his own store that sells interior decor from designers all over the world. He is a very successful young man and only 25 years old, but there is one thing some people cannot get past. He is gay.

I was lucky enough to grow up in a family that is very open about anything and everything. When he came out to us we were more than happy that he could be himself and we did not love him any less. But the amount of hate that goes on in this world towards the gay community is unreal. There are people who come into his store and once they see him, decide to leave. Which leads me to my question: Why do people feel so opinionated to life situations that don’t apply to their own? My brother is just like every other hardworking person on this Earth. Being gay doesn’t have any effect on his life except the difference in who he chooses to spend his time with. This question can also be applied to many other conflicts like racism and a lot of other things going on in this world. We want to live in unity but we cannot seem to get past the stubborn side. No one is more superior than the other and hopefully one day the new generations will understand that.

Sources:

1. http://www.pewforum.org/2016/05/12/changing-attitudes-on-gay-marriage/
2. http://www.cbsnews.com/news/poll-americans-views-on-same-sex-marriage/
3. Brewer, Paul R. “The Shifting Foundations of Public Opinion about Gay Rights.” The Journal of Politics 65.4 (2003): 1208–220. Web.
4. Herek, Gregory M. “Can Functions Be Measured? A New Perspective on the Functional Approach to Attitudes.”Social Psychology Quarterly 50.4 (1987): 285–303. Web.
5. Patterson, Charlotte J. “Family Relationships of Lesbians and Gay Men.” Journal of Marriage and Family 62.4 (2000): 1052–069. Web.
6. Petev, Ivaylo D. “The Association of Social Class and Lifestyles: Persistence in American Sociability, 1974 to 2010.” American Sociological Review 78.4 (2013): 633–61. Web.
7. Feiring, E. “Lifestyle, Responsibility and Justice.” Journal of Medical Ethics 34.1 (2008): 33–36. Web.
8. Barrett, Donald C., and Lance M. Pollack. “Whose Gay Community? Social Class, Sexual Self-Expression, and Gay Community Involvement.” The Sociological Quarterly 46.3 (2005): 437–56. Web.
9. http://library.whittier.edu/search~S0?/X(lifestyle)+and+(opinions)&SORT=D/X(lifestyle)+and+(opinions)&SORT=D&SUBKEY=(lifestyle)+and+(opinions)/1%2C2%2C2%2CB/frameset&FF=X(lifestyle)+and+(opinions)&SORT=D&1%2C1%2C
10. https://www.ted.com/talks/jenni_chang_and_lisa_dazols_this_is_what_lgbt_life_is_like_around_the_world

Key words: Lifestyle, Opinions, Gay, What Business is our own, Personal Space, happiness, depression, meaning to life, homosexual, and home life.