Communities and Fandoms can be intense. I'm sorry people are being so rude. To say you ruined their childhood is ridiculous. This is the internet, where everything exists. Rule 34 was it? So if they can like a show, dispite that being everywhere, a vent piece you made shouldn't be a big deal. They are choosing to make it one. I'd say that makes their words the real bullshit.
There are jerks and complainers in every group. But I bet there's more people who genuinely it than not. Jerks are typically just louder. The people who liked it will become fans, and those that claimed to hate it will forget why they were upset in a day.
It's easier said than done, but try not to let it get to you. Make what you like :)