Depends on what will happen in the future, till now my country still prohibits transactions with bitcoin. And I think, in the future bitcoin will have both functions, payment system and investment system. And even more, for those who use bitcoin in countries that have received bitcoin properly, I'm sure they have done both functions.

If my country has received bitcoin well and legalized all transactions using bitcoin maybe I will try to do transactions using bitcoin, this will make some of my friends curious to use bitcoin and hopefully they will follow what I did. You are right, maybe one day I will use these two functions with certainty.