Thanks all for opinions and input. I agree the preference towards in persons vs. on line gaming but is VTT better than TV, video games, or painting figs in the basement? I have been using Roll20 not because I have did any complex assessment, but it seemed to have market share (remember VHS) and went with the crowd. Some of the alternatives seem to require you re-purchase assets in their system.
Way back in the Mega Traveller days, one of the High Clerics of Traveller said in an interview that half the customers (note not players) were collectors, they bought the material to read and enjoy the art, but did not routinely play. I was in that group as I was hundreds of miles from home and away from the gaming group I grew up with. I wanted to play but could not find a local group, VTT solves that.
I got out of the Air Force and am now much closer to home but still 1-2 hours away from my gaming buddies of 40+ years. Plus we are married, some with kids etc. VTT (note right now I am system agnostic) allows us to get together on week nights, without the driving. My group is about half my gaming buddies, nephews and offspring of gaming buddies. I also have gotten players from Australia, England and Turkey in our game. Although it was fun having them, the reality was it is pretty hard to keep them due to time zone differences. When I need a player, I post openings on Roll20 and I am usually overwhelmed in a couple of hours. There are a lot of Traveller fans looking for a game. The downside of VTT is the "ghosting", players who just stop showing up without any communication. GMs just have to have the AC to deal with that.
I am also starting to work on the "Celebrity Guest NPC" idea. These are people I know, or mutual friends, who are VTT curious but not ready to commit. I want to use them to act out an NPC, based on some loose motivations I give them. Plus it would give the players a break from me talking.