The settlements have been and still are illegal under international law. The Roadmap, the Quartet, the EU, the UN and the USA have called for an end to settlement. When Israel legitimately get the settlements as part of a peace deal, they can continue building as they wish. It's a shame that so industrious and intelligent people like the Israelis are wasting their time and money on stolen land. If you buy stolen goods, then you put yourself to blame. Otherwise, as Palestinian PM salam fayyad said, the Negev is almost empty and barren and it DOES need development. Seek your jewish heritage there and no one is gonna open their mouths in protest.
Jerusalem suburb of Even Sapir evacuated as wildfire spreads (Haaretz)