You keep saying you don't mean to offend then say something offensive.
First you say it's a defect, then you say it's a choice.
Lesbians do not prefer to fukk objects, as opposed to humans buts it's a tool to get the job done. Just like a backscratcher.
-unattractive women, transsexuals who look like women post-op all have vaginas. But you may not be attracted to them for different reasons. Lesbians do not find men attractive at all.
According to your logic, masturbation and contraception are against nature.
Homosexuality is NOT a choice. Many LGBT people wished they were "normal", tried to change and took their lives because they couldn't.
There are a lot of things go into attraction: culture, biology, psychology, etc. Sexuality is fluid.
The pleasure aspect of sex is important in social species of animals. Social animals have more developed brains. They form emotional bonds. We are not confined to living to procreate. The animals who do are ones who must procreate a lot because their offspring are in constant danger of being killed before they can procreate. Humans are on top of the food chain and have advanced brains. Look at elephants, dolphins and bonobos for example.
You have already explained your point multiple times. I understand your point. I told you mine. Just because you explain it again does not mean that I'm going to agree with you. You are entitled to your opinion.
With that said, I'm done going back and forth on the topic.