I think the main difference in your example is that people aiming to further develop marriage equality know what the current legal definition of marriage is and have for some time while you have just now come to learn the meaning of the words you have been using.<quoted text>
you want to re-define marriage....so why can't I define words to fit what I want?
To make this easier for you in the future, you may want to check the options in your browser (the program that lets you access the internet) and see if it has an option to turn on a spellchecker (if you can't find it, let us know what browser you're using and we can help guide you through it). This won't fix leach/leech issues but will get your spelling up to snuff!
If you want to go further, you could even use a word processing program such as Word to type out what you would like to say, before cutting (control key + x) and pasting (control key + v) the text here. That would let you use a grammar check as well!