Whut they said. In the olde dayes, the virtue of a VTVM was it's negligible measurement load; most VOMs were 10K/V or 20K/V, and you had to work arithmetic to figure out how your meter load was affecting the reading. Nowadays, I don't use my VTVM all that much unless it's a moving reading where an analog (meter with a needle) readout can show me what the trend and movement are, and the flashing digits on the Fluke are just confusing.
I still like my EICO, though. It's such a piece of dawgpyle, construction-wise, and yet it does such a good job. Pain in the neck probe, though.
No, in my opinion, you don't actually need one. As an electrogeek you might want one, though.
Aloha,
Poinz