We hear these from the old folks that have regret in the past and didn't follow what they think is right. And for us, Bitcoin has came as once in a life opportunity so we better take the risk or just watch it grow together with those people that have risked what they've got for it.

We don't have to be that passionate about it whether we buy or not. Although at some point of our lives, we're like that and we don't notice that. The fact that we're holders and we're believing to its future is already a way to say that we're passionate on it.

While for OP that he's buying it not with his spare money, it is like the majority that's buying Bitcoin with their hard earned money and that's how everyone can be said to be passionate about buying it.