Yes. There are also rules on MT which you accept when you become a member and are available for you to peruse on request. The obvious reason why your earlier replies were edited were that what was said in them was deemed to be offensive.
That you may have better explained yourself at a later date was, for you, a chance missed. Like many here I'm a member of many forums and have been a member of one or two where there were no rules as such. I even mod on others. I'll give you a guess as to what happened to the un ruled forums - they lasted a matter or weeks. In the case of one it was removed by the ISP.
From what I saw and the replies it's patently obvious that the post you had made were quite simply out of order. In spite of the blurb used in AOL's adverts on the TV the internet has some rules and most of these have been chosen by it's very own users. It's why there are so few systems and code for the programming and why even on open to all forums you shouldn't think that this means you can say something that the sites own rules prohibit nor that if the rules allowed that people will respect your opinion even if it's wrong.
One particular phrase which stuck out was your brief explantion of unnatural. I think it amounted to same sex breeding - ie: two guys cannot have kids any more than two women can. I only made it as far as CSE grade 2 in Biology and while it may be true in humans its not true in nature and hence is natural. From a purely hetrosexual point of view the idea of having less competition for mates (ie: women) appeals to me so the more gays the merrier cos I get more birds
I've never had a real problem with free speech except some abuse it. It's one thing to be able to say what's on your mind but you should do so with two more in place.
The first is try and have a proper point to make. Far too many bigots abuse free speech regardless of how stupid what they say and whether or not they actually speak the truth. The second is to be aware that you can offend someone. If you are entitled to say how you feel then so are they.
Finally be aware - MT allows you a soap box but can just as easily remove it. You accept that by walking through it's doors. Far better, in my opinion, when politics, questions of sexuality and religeon get thrown into the mix to stick to what we all share. We put aside our differences and focus on bodybuilding, strength, fitness and the healthy lifestyle. As in a gym MT then becomes a place where all - A-L-L - kinds can mix. Remember that.