Should Churches Spend Money on Nice Buildings?

Also, for the first 300 years the church didn't have an official building: Should Churches Spend Money on Nice Buildings? – The Gospel Coalition Blog:

“What’s so wrong with constructing church buildings? Nowhere does the New Testament say we shouldn’t construct church buildings.”

But that’s just it. There’s also nothing in the NT that says we should construct church buildings. So why is it that, whenever we plant a church or whenever a church starts to grow, the first thing we think is, We need to spend masses of our resources on a building? Why would we spend an inordinate amount of our resources on something that is never prescribed or even encouraged in the NT? Why would we not instead use those resources on that which is explicitly promoted in the NT, such as sharing the gospel with the lost or helping the poor in the church? As I write this, more than 700 million people around the world live in slums. Many of them are our brothers and sisters in Christ. Should we really be prioritizing bigger buildings for ourselves?