Plus, you can build it "right" (wood glue on all joints, extra corner braces, etc.) It makes it impossible to disassemble but I find that IKEA furniture doesn't handle disassembly and reassembly that well anyways.
Speaking from experience with a corner computer desk made out of MDF, yes - I'm amazed it survived being disassembled and moved at all, but it didn't make it the second time.
Ikea will take back (refund or replace) even the most pathetic attempt at assembly. I had one embarrassing fail and didn't expect sympathy and was really just hoping for a destroyed part replacement (even buying it). They just gave me a whole new unit no questions asked.