I understand that resources should be used wisely, but I also believe God intends for situations and people to spend money on some things others may see as being too lavish. I'm not saying a mansion and private jet are Godly, but that doesn't mean it's UNGodly either.
A woman who anointed Jesus with a jar of perfume that cost an entire year's wages was heavily criticized for not giving the money to the poor. But Jesus said, "Leave her alone, she's done a beautiful thing for me."
I just attended a lecture in which it was estimated that Solomon's temple for the Lord was covered in about $218 billion, yes, BILLION dollars worth of gold and silver. Solomon built a house for himself as well, and I doubt it was a trailer. And Joseph of Arimathea, who was noted as a wealthy man, provided the tomb for Jesus' burial. And when Jesus died, the soldiers cast lots for his garment because it was seamless, woven in one piece, and therefore, a sign of craftsmanship, value, and expense. Someone had either bought this for Him or He was able to purchase it Himself.
I know you're going to say, But, these things were for Jesus... and the temple was for the Lord.
However... I highly doubt that Abraham, Isaac, or Jacob were living in subsidized housing. The Bible says that Isaac was so prosperous, even the Philistines envied him. If any of these founding fathers of faith were alive today, I would imagine, they would be Living Large.
And I truly believe that's part of God's plan for some. These people can reach a group of people that you and I can't, and I truly believe God sometimes intends for this to happen. It always amazes me that God called out special people to craft some of the things in the temple, such as filigree work (one of my personal favorites.) The Bible says that God Himself gave them the knowledge and skills to do such fine work.
But like anyone, they need practice and opportunity to develop their God-given skills, even if their services are way beyond anything someone like you or I could afford. I truly believe that in some cases, God gives some the wealth to be able to support things or reach circles of people far beyond ordinary means, because they need contact with people of faith and an opportunity to be who God made them to be just as much as we do.