Considering the supply vs global population = 0.003BTC per person to go around.
Then other factors like not all 21 million will be in circulation due to lost wallets/deceased hodlers who never informed anyone where their seed is, and also an increasing global population and future generations who all want in.
Do you think 0.1BTC will be like owning a mansion?
No. If we assume bitcoin will hit $1 million (which is pretty generous), then 0.1 BTC will be only $100,000. If bitcoin hits $5 million, then it will be worth $500,000. With potentially very high inflation in future years, this may not be as great as it sounds today. However, owning any kind of bitcoin is probably better than holding cash.
I say yes because in some countries such related value amount of bitcoin can change some one situation if utilized very well why some countries it will not reach any where, so all this things can make clarification of doubt through country currency and the place we are, let me shock you, do you know that some will have $1 million and they do not have power to utilize it but some have a million and utilize it and it depends for the person you give the value