If you want to go into management in industry, an MBA will help you. It sets you apart from the rest of the crowd with BS degrees. By no means is this true in every situation, but say you get your bachelor's, get your 4-5 years of work experience, get accepted to a top tier b-school program, it will help you down the line.
If you have no drive to be in management or a C-level position (COO, CFO, CEO, CIO, etc.) or in a VP position in a fortune 500 company, then you don't need an MBA. The majority of the people in those positions, and more and more every day, are getting their MBA's.
This isn't to say that people with their bachelor's don't make it far, a lot of cases they make it into those C-level positions. However, competition is getting tougher for those positions, just because so many people are throwing money at 2 years at Harvard MBA, graduating, and instantly making $110k in some i-banking or consulting gig. IMO, a MBA will eventually become the standard for VP/C-level positions in fortune 500 companies.
An MBA isn't $200k either, more like $90k.