Christianity was always based; there are just a lot of people who claim to be Christian but don't practice it.

God already owns all the wealth in the world, so really you're only a steward of the portion you have. The Lord giveth, and the Lord taketh away. And Jesus instructed in Luke 6:38:

Give, and it shall be given unto you; good measure, pressed down, and shaken together, and running over, shall men give into your bosom. For with the same measure that ye mete withal it shall be measured to you again.

Jesus didn't say "If you give" or "It would be cool to give" or "Give if you're rich." Jesus said "Give." What Christian would even debate giving to a responsible person is in danger of getting kicked out of their home because they can't afford to keep the lights on? Even if it were optional, I sure like the idea of my cup running over. Like Jesus saying in Matt 6:5 "When you pray...." He said "When you pray," not "If you pray" or "When you pray at Church on Sunday mornings" or "When you pray because you're in trouble."