I don't see buying bitcoin as the same thing with building a house. This is because when you want to build a house, you must have a huge amount of money to start with, but bitcoin doesn't need that just a small percentage from your income will get you started as long as it doesn't affect other budgets for the monthly. With some amount, you can use it to continue buying over a long period of time to increase your bitcoin portfolio.
On the contrary some people built their houses starting from small without having large account balance at the beginning. Some started by just moulding few blocks, from their they do more until they achieved their target of building a house over several years. In the ongoing war between Isreal and Hamas, I saw a video of a man crying that the house he spent 40 year to build have been destroyed and I was shocked to realise that someone can build a house for that long. It is not a good situation to be in but I'm just letting you know that financial situation can make people do things differently. It is all about planning and being determined.
The only difference between what you are saying and why I feel that such comparison is not necessary is that while Bitcoin is an investment, building a house is a necessity unless perhaps you are making the comparison on the basis of someone going into real estate which is also an investment. In this case, it cost a lot of money to get started and the money invested could yield different and better results if injected into Bitcoin. Nevertheless, it is a think of individual knowledge, understanding and preference.