I'll borrow from my church's core values document to answer this:

Simplicity

We commit to live a life free from clutter and the allure of materialism. We affirm that every believer and every community of believers has a responsibility to renounce the sins of its own people. As North Americans we renounce the slavery and idolatry of materialism by embracing a simple lifestyle. We do not believe that money or things are in themselves evil or to be avoided, but that the love of money and things is one of the greatest perils facing western Christianity in our time. We willingly use material things and wealth for the service of the kingdom, but not for personal fulfillment or inappropriate luxury. In so doing we again value the poor who have less, justice in living for equality and personal holiness in pursuing a whole hearted devotion to God. (Ecclesiastes 5:10, Matthew 6:19, 24, 26, Matthew 10:10, Mark 4:19, Mark 12:43, Luke 9:3, Luke 12:15, 33, 1 Tim 6:7, Hebrews 13:5).

Sharing and Giving

Because we value community and simplicity, we commit ourselves to both sharing and giving. We will share because it promotes relationship and breaks the bondage of possessiveness. We believe the western doctrine of personal property is imperfect and needs to be tempered with the more biblical value of generosity and sacrifice. In sharing what we have with others we confess that God is the true owner and that we are only stewards in his vineyard. We will also give, because in giving we destroy the grip of materialism over our hearts because we release the resource, wealth, or possession completely into the control of another. For that reason we will pursue relentless generosity and the holding of all things in common. For this reason we encourage our people to give as often and as generously as they can, and to consider themselves stewards of the rest. Likewise, the collective finances of the church and ministries should set an example in this regard. (Malachi 3:10, Matthew 25:40, Luke 3:11, Acts 2:43, Acts 4:32, Acts 20:35, 2 Corinthians 8:7, 2 Corinthians 9:10-13, 2 Corinthians 8:13, Ephesians 4:28, 1 Thessalonians 2:8, 1 Timothy 6:18, 1 John 3:17).