It really depends on your situation and what you would otherwise do with the capital you would have put as a downpayment on a house. If you have or are planning to have a family I would recommend buying a house even if it is not the best ROI. Otherwise just rent the most affordable place you can that is in a safe area where you can live comfortably and plow the rest of your money into Bitcoin. Then a few years down the road when it is time to buy, hopefully Bitcoin has worked it's magic and you have enough for a downpayment plus some Bitcoin left over.