My desire to build wealth is based on the following:
1) My desire to provide my son every opportunity I can
2) My desire to not rely on the goodwill (or political motivations) of others to meet my own basic needs
3) My desire to cease to need income (I do not enjoy needing someone else's willingness to employ me on a perpetual basis)
If I build enough wealth, these desires will be realized, and I will be happy about them.
You can preach and pontificate all you want about not needing wealth, or that until I don't desire to build wealth I do not know some sort of "truth" out there, but if my son needs medical care, wants to go to college, if I get fired and can't find another job, if the economy collapses, I will be thanking myself for saving/investing some of my income to build wealth. Compared to that basic security and well-being for my family, all the preaching in the world about seeing some greater truth in being poor will be lost on me.
To be honest, my ultimate goal in life is to retire to a modest 20-acre farm somewhere. But you know what I need to be able to achieve that goal? Wealth.
"The knowledge and prudence of the poor themselves, are absolutely the only means by which any general and permanent improvement in their condition can be effected." - Thomas Malthus