>>4648552It's a dominant/control thing like every other fetish.
I would say the ultimate control fetish, because not only does the human brain subconsciously equal power to size but there's literally nothing you can ever do to fight off a giantess, she would have complete power over you.
Now the people that aren't into the dominant. I think they just are into it, because they can explore the human body in more detail.
Say you like big tits, with a giantness, now you can live inbetween the tits, pretty epic if ask me.
Just don't ask why some people are only into the growth part. My guess would be that they are into women lossing contorl (since they are always embarrassed in the videos), and maybe they were first turn on by it in a cartoon as kid. 