I heard about bitcoin at the beginning of 2011 though I had no interest for it not until I heard about the famous pizza
i did not get into bitcoin for a really long time either and it was a really big mistake to be honest, right now i dont waste my time and i spend a lot of it on bitcoins
I know the feeling even i if only i knew about it when the first year of it was starting i probably had much invested on it with time and money too. And the same as you i give most of my free time to it even when im tired from work.