> Being able to marry the one you love is an essential part
> of the freedoms that should be accorded all human beings,
> including those that love others of the same sex as their
> own.
Marriage means what it traditionally means. Redefining it to mean a generic "love" would also mean that kingkongrevenge's example of two elderly sisters could marry, or a mother can marry her son, or a man can marry his horse (provided the horse neighs in consent).
Redefining the word "marriage" to meet the whims of a minority doesn't actually change what a true marriage is.