You know, nellie, when you were debating, pre referendum, you were quite balanced and fair about both sides of the debate (in fact I've even seen one of your posts where you said you probably wouldn't vote because there was so much to say for each side). I often wonder what has turned you into someone who is so bitter against the EU.
The whole point of supporting the poorer members of the EU is to help them to grow their economies so that they can benefit from an improved standard of living, have more to export (and can import more; it's a two way process) and, by increasing their GDP, be able to contribute more to the common EU budget.
Whether this latter benefit would mean that all members would pay proportionately less as the poorer countries contribution increased or whether the bloated and grasping (and illusory) entity that is the EU would grab more money to spend on vast extravagances, nepotism and jobs for the boys is a matter of speculation as no-one here actually knows which way it would work out.