I absolutely do think it should be an investment and I think treating housing like an investment has substantially increased the quality of housing. A great deal of advances in materials, construction, electrical work, plumbing, you name it... is because housing is treated like an investment and people are willing to spend money to keep their asset in top shape.
Furthermore I believe that investing in real estate promotes those asset owners to contribute to the neighborhoods they've invested in. When you invest in something you are participating in its growth and you're attempting to align your well being with the well being of the asset you're invested in. That's a great thing.
The downside to real estate investment is that it could prevent future people from participation. The solution to that isn't to stop treating real estate as an investment, it's to allow more opportunities for building and to incentivize people to build entirely new communities instead of pigeon holing everyone into a handful of existing mega cities.
> I absolutely do think it should be an investment
I think this is treated differently in different cultures. In Germany, while there is a real-estate as investment market, many people don't (expect to) move much during their lifetime. They buy their home ('Eigenheim') essentially for life (sans the tail end in a nursing home). Still many put a lot of time and money into those houses they don't expect to sell. It's a quality-of-life thing (and some bragging rights). You can (and some do) spend easily a fortune on a kitchen alone. You even find more than one kind of light switch there.
So I'm not quite convinced that real-estate as investment is necessary to drive housing quality.
An investment isn't marked by the expectation to rapidly sell. I have many assets that I've held for years and intend to hold for the rest of my life, they are still investments.
I am not an expert on the German real-estate market, but the first search results on Google indicate that Germany has a very active real-estate investment market and that home ownership in Germany is among the lowest in the world, the majority of Germans rent their home.
Either those people are renting from the government, or they are renting from a private landlord, either an individual or a corporation. If they are renting from a private landlord, and once again my very cursory research indicates 96.7% of housing is privately owned, then that's a big sign that the landlord owns the property for the purpose of deriving an income from it. Given that 56% of homes in Germany are rented out (one of the highest rates in the world), that indicates that at a minimum, 56% of homes in Germany satisfy the textbook definition of being investment properties.
Furthermore I believe that investing in real estate promotes those asset owners to contribute to the neighborhoods they've invested in. When you invest in something you are participating in its growth and you're attempting to align your well being with the well being of the asset you're invested in. That's a great thing.
The downside to real estate investment is that it could prevent future people from participation. The solution to that isn't to stop treating real estate as an investment, it's to allow more opportunities for building and to incentivize people to build entirely new communities instead of pigeon holing everyone into a handful of existing mega cities.