For sure. A lot of untapped potential still left... and achievements to hunt down. I actually have been putting off tearing my house apart to find my copy of Fallout 3 to possibly redeem to Steam. GOTY Edition too, no less. Ah, but I shall be spending months in the Boston Wasteland before I will be able to hear the call of the D.C. Wasteland again... unless sometime in 2020 they've discovered how to mod the Mojave and D.C. Wastelands into Fallout 4.

The next five years are gonna be very interesting, I feel. But I will always return to where we began.

Probably. More for the modding than anything else though. I'm sure fallout 4 will be enough to satisfy me in every other aspect until modding for it really takes off. I have a feeling though that the improvements in 4 are going to be so good that I just won't feel compelled to go back for a while.

Of course I will. There's still so many mods I haven't tried, achievements I haven't unlocked, there's even quests and dialogue I've never seen and/or heard before. For example, I never tried the Legion or Mr. House playthroughs in New Vegas. I never helped President Eden in Fallout 3 either. Plus there's still mods that are unfinished, but that will come out and no doubt be awesome as all hell. I've even thought about getting all the older Fallout titles and playing them all in order.

Also there's the fact that I wont be able to run Fallout 4 on my computer. So yeah.

Sometimes I will, maybe to take a break from 4. Not often though.

Well, I still play FO1 & 2 so I think its a yes for me

For FONV, Heck yeah! I love NV and really it was my first exposure to the Fallout lore and world. I'll defiantly go back and forth between the two games. However I think for the first few weeks prior to FO4's release, I'll probably be obsessed with that first.

FO3? Actually....I'm not sure on that one. Don't get me wrong, it's a great game and I really liked it. However my gaming computer actually has trouble running it and it's not as good as NV in my opinion. I'm sure I'll go back to it eventually though.

The only reason I go back to previous fallouts is because a bunch of new or old mods i didnt see before interest me, but seeing as to how I got that out of my system and fallout 4 is here. I dont think so.
While modders are still working up on fallout 4 content though I may try my hand in fallout 2, but only after I quenched my thirst on fallout 4.

I always go back everyone once in a while to check out mods and stuff but otherwise I just keep it sitting there. I usually have an urge to play everyone once in a while

Only the older games untill fo4 has graphical mods as the way it looks like now is unplayable for me.
And the voiced protagonist thingie ...... why bethesda why ..

I personally have no problem with having a voiced protagonist. Sure, it shaves off my potential playthrough as pre-ALS Stephen Hawking (bing bing mod idea!), but it doesn't hamper storytelling at all. Just my opinion here, but I've never felt more connected to a character in an RPG than when I was playing as Geralt. I don't think modding potential will be hampered too badly either since there is enough dialogue present that gamers will probably splice it up if they are determined to have a fully voiced quest mod.