It´s not what makes life interesting but it makes a lot of interesting things possible in life.
In most cases a more sophisticated structure makes life more comfortable: you can survive in a tent (and it´s always refreshing to go back to basics!) but it´s nice to have light, water, energy, heating, sanitation and communication.
Then you get to personalise yours, adding the colours, shapes and textures you like, bringing favourite objects and adding new embellishments.
The result being that everyone´s is slightly different.
Finally you get to live in it and throw a party now and again!
On the other hand, when you´re struggling to get in and you haven´t got a key, it can feel like hitting a brick wall...