C.V.
Basically, using escrow means that both parties have completed all the requirements in the buyer's/seller's agreements, and all the legalities are completed, so that the funding from the lender can be moved to the seller. This keeps the buyer or seller from making promises and not keeping them. It also forces both parties to complete all the legalities (title, taxes, inspections) prior to moving monies.
Many lenders will refuse to lend to you without an escrow. Also, I suggest utilizing an escrow account for your property taxes.
This is for both yours and the seller's protection.
ETA: Using escrow doesn't mean that you have spending or budgeting issues. We're very careful with our spending and budgeting. It's just one less thing you have to deal with when you're making your house payment, and one less thing you have to worry about when taxes come due. We put 40% down on our house and still chose to utilize the escrow account.