Being a Christian I would ask you the same thing because all I have is people and I love them but on the other hand you should be eyeball high with hate since you hate the very world you live in so much you want a "spiritual" one to exist
The Spirit is not something separated from matter. Actually when you have sex with a person you are deeply in love with, you are creating spirit. Spirit which will remain eternal, so as you can see, it's matter that creates spirit and not vice versa.
But matter has no meaning if we don't give it a meaning.