This is usually dismissed by them and I suppose its human nature to want 1 or more of something rather than a piece.
Yes, human nature, but still non-sensical.
Suppose I finally own 1.0 btc, but then I want to purchase something for 0.02 btc. If I purchase it, should I now be sad that I don't own a whole bitcoin anymore?
See this why most average people get left behind on almost everything. Because their internal system of rationality is deeply flawed.
It reminds me of the whole "Oh I want to be a millionaire
TM!" saying. Like having a million dollars really means what it used to 30-40 years ago. And like you should feel sad if you only have $990K, because technically you're not a millionaire.