What a red herring......

Let’s get rid of all the confusion.
Civilization requires the influx of new citizens to be sustainable and viable....
If not achieved, they become extinct.
For this to happen, you need a boy, a girl, engaged in a activity that results in replenishing the “stock” of humans ( or animals in the wild kingdom).
This is physical truth, based on facts since the beginning of time.
It’s as “normal” as rain grows plants, etc.
To say this activity (sex) between two same sex indulviduals is “normal” is to deny the very reasons the activity of sex exsist in the first place at sustaining the influx of new members into the herd...
So, the key here is the word, “normal”, no, it is not, because it can’t produce the desired results, therefor, if it’s not “normal” it would simply be “abnormal” by design...

Now, this in no way detracts from “sexual preference”
Which we all participate in, by attraction, etc...
But again, the stated goal of nature is to reproduce.

Folks are trying to promote their OWN preferences and BELIEFS, in this matter, and just like religion, the state can not, never, promote a “belief” over another, or all hell will result as folks battle to control the minds of others.....

So, it is natural to procreate until all resources are depleted?
If not, how do you think nature should respond?

You assume nature has a logical plan,...
...if so, explain the duck billed platypus...