"We're also called to be seperate from the world."
That only applies to Rhode Island and parts of Massachusetts and Connecticut. The rest of us are told to go into all of the world.
John 17:15 "I have given them thy word; and the world hath hated them, because they are not of the world, even as I am not of the world. I pray not that thou shouldest take them out of the world, but that thou shouldest keep them from the evil. They are not of the world, even as I am not of the world. Sanctify them through thy truth: thy word is truth. As thou hast sent me into the world, even so have I also sent them into the world."
The context of the verse is Christ praying to God the Father for those who "belong to Him". In other words, the saved.
We are IN the world, but we are not to be OF it. We are claled to preach to the lost everywhere, but not in a worldly, fleshly, temporal fashion.
Luring the masses into church with espresso, thumping bass drums, and a rave atmosphere is pursuading people by appealing to fleshly desires. It's the same bait n' switch technique that used car salesmen employ.
"If you have been raised with Christ, seek the things that are above, where Christ is, at the right hand of God. Set your minds on things that are above, not on things that are on earth. For you have died, and your life is hidden with Christ in God." Col 3:1-3
Be in the world but not of the world. There is a big difference. "Do not be conformed any longer to this world but be transformed..." (by the renewing of your outward actions? NO!)"... by the renewing of your mind." That means do not any longer think like the world. Marketing strategies for growing the church is thinking like the world. Targeting demographics is worldly. It is all right for businesses, but the church is not a business. When you run the church like a business, no wonder people are getting 'fired' for not conforming or 'producing' as well as the 'boss(es)' think(s) they should.