Why is loyalty is scarcity in gay relationships?

There's true love and equal love and N shades of in between. It's all beautiful to trend on twitter and facebook. The whole world went ahead and changed their DPs on Facebook when 'Love won'(according to who, thought?). But, let us take a step back and see. Does it reflect the real scheme of things? 

There is an occasional news of a gay marriage in California that we read about in the papers. Nobody really cares to know how long that marriage sustains for some strange reason. I wouldn't be bringing this question in a straight marriage, a) because I don't care. b) this entire post is about the fragility of gay relationships due to loyalty or rather the lack of it.

That brings us to the question why is loyalty so scarce among the gay community? 

Or is it not just the gay community?

When you look at the numbers, straight marriages obviously last longer than gay marriages. Some of the reasons are: 

#1 Validation 

As it happens with most other things in the animal kingdom, the human race is extremely socially conscious. Most sucky marriages, especially, straight ones survive mainly due to stigma and fear of society. Given a choice, they would freely walk away doing their own thing. But, their need for social validation is a lot more than their need to protect their own happiness. So, they let it cannibalise their happiness and suffer through a bad marriage. A relationship on the other hand is far more easier to let go off and breakups are mainstream now. When it comes to the gay community, we aren't there yet socially. Nobody actually cares if you are single or married and it really doesn't become as much of a talking point, except a few(read as most) of the gossip-mongering people, who nobody can do nothing about anyway. 

#2 Long Distance

There are so many women in my neighbourhood in Madras, whose husbands work in the Gulf countries and they don't even get to see them for years together. Yet, a conversation with a local doctor revealed to me some staggering numbers in terms of the number of abortion cases she had to deal with on a daily basis amidst those women. Well! Doctor-Patient confidentiality - RIP! 

The point is, humans are driven by their instincts and hormones. These 2 are way more powerful than what one can imagine and everyone succumbs to these things at some point or the other. However, a lot of times these things are not even revealed to the husband, who probably has his side to the story as well in a foreign land. 

In gay relationships/marriages too, distance is one of the factors for the lack of monogamy, which is closely yet mistakenly associated with loyalty. When both the parties are fine with an open relationship, it is a different story. However, when monogamy comes to play, that is the beginning of the end. 

#3 Lack of Commitment 

Well, for most other cases, I would simply attribute it to lack of commitment towards the relationship itself and to the partner in question. It isn't impossible to hold on to one person provided there is a will to do so. This is something each of us need to introspect and decide whether we can afford the amount of commitment a relationship needs. Sometimes, they can be very demanding and those are the moments of test of strength. Those who sail through successfully experience the proverbial 'happily ever after', for the rest it is the beginning of a new chapter. To each is his own. I am glad I don't have to mention 'her' in my previous sentence considering the context here. :)