That's a little bit like the Ikea effect where people who assemble their furntiure themselves value it more than people who don't. This also leads onto another

That's a little bit like the Ikea effect where people who assemble their furntiure themselves value it more than people who don't. This also leads onto another problem which is a lot of things you own demand attention and money throughout their life. Cars are the obvious example which demand new tyres, servicing, fuel, cleaning, their own house to be stored in, etc. Even the bookshelf that Moby Dick sits on will need dusting from time to time.