Unfortunately, in our wonderfully (/sarc) civilized world, things have been a tad overcomplicated, by popular demand.
It helps to have a building."
Okay, that is funny. But, whether a building is necessary is still not cleared up. The gatherings of believers in the first century were in homes (Prisc & Aquila Rom. 16:5), in caves, in graveyards, in market places (Acts 17:22), by river banks (Acts 16:13). When did we get the order to sanitize the assembling together?
Of course, if one regards an edifice as "God's House", making that place nice is only a natural extension of worship, an expression of reverence, awe, and reflecting that as well.
Yep, perhaps it can be overdone, but recall Jesus' remarks to the disciples when the woman anointed his feet with expensive oils and they complained that the money would be well spent on the poor.
In this society, would you wish to worship amidst hecklers promoting sinful agendae? Having some physical sanctuary helps keep one's mind on worship, without the interruption of others not inclined thus.
That doesn't mean that one must be in the building to worship, (how many have attended Mass just a stone's throw from battle?) it just helps to have that option.