can you call 2 same gender being together a Family?

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man + women = children ,,, its a family man + man = nothing or even some diseases women + women = nothing or even some diseases family will not grow in numbers without man and women , adoption is different than having your own baby, completely different , also having a donated sperm , while you are sure that child will grow up not knowing his father , while you planned it to have him without a father, even if science allowed it yes people today accept it , and they even defended it ,,, but is it right? naturally ... is it something that goes with the nature of life? when you see activists defend the earth ,,, and fight the global warming, from the people who miss use the resources and abuse it and do things they shouldn't do , just to satisfy their greed or desire for more so they justify what they do? is that justifiable? they fight 'cos they want the natural order to go back to its place , so earth will do what it dose so every one lives happy . normally and naturally ,,, why its not the same in case of same gender marriage? isn't it the same as what peoples do when they abuse the earth ? why they accept to call it a family , even it has no basics of the family ? so many questions , so many justifications that only serves some , while damage more others ,,,