A value of BTC0.1 is more than enough to actually make it, although it is definitely not enough to get yourself your own house, but having that value of BTC is more than enough to make it grow and invest in several projects, Bitcoin is definitely for a long-term investment, if we simply hold our 0.1BTC in the next 5 years then I'm pretty sure it may be enough to buy a mansion depending on BTC's value by that timestamp. 
I think it's doesnt make sense owning a mansion with just 0.1 btc in 5 years.
If we calculate, 0.1 is worth less than 10k USD and the price of the cheap mansion is around 1mil. So in 5 years, with that big amount of marketcap, bitcoin won't make 100x times price growth because they would make the whole crypto marketcap surpass the amount of money available in this world i think.
So, i don't think we could make it with that only 0.1 btc
I agree it is impossible to buy a mansion with just 0.1 BTC in 5 years, even though the price of Bitcoin will skyrocket in 5 years, the amount of 0.1 BTC is 
too low to be able to buy the mansion. If our target is only to buy a small house, it is still possible to achieve it. Indeed every country has a different 
mansion price, and in my country it will not be enough to buy a mansion for only 0.1 BTC. So if I want to buy a mansion, I will work hard to collect 
at least 10 BTC in 5 years. And it's not easy with the income I have now, but as long as we work hard and never give up, there will always be a way 
to reach our goals. So start collecting as much Bitcoin as possible starting from now, before the price of Bitcoin gets more expensive.