Well, let's see... if I'd never joined ZD.
This alternate timeline begins on January 31st, 2010. If I recall correctly, I was getting back into the Zelda series, and thus looking around for a Zelda forum to join at the time. Most of the ones I was finding were dead or inactive. Let us suppose that I hadn't stumbled across Zelda Dungeon, or that Zelda Dungeon was merely a news site without a forum.
Now, at this point, it's easy for me to avoid writing much of an alternate history by simply saying I would have joined some other Zelda forum, and met most of the same people who also would have wanted to be on a Zelda forum. But let's suppose I hadn't been able to find a Zelda forum at all, or I got frustrated and gave up on finding one after the point where I found ZD in this timeline; because the divergence in a timeline where ZD didn't have a forum and everyone joined a different Zelda forum, could be surprisingly small and not worthy of writing about.
This was a couple of months before I went to work for my father, and I talked to everyone here off and on during that situation. My plans likely wouldn't have changed much. The only thing that might have been different, is that I would have spent a bit more time studying Spanish, playing video games, and perhaps gone back to my old Psychology forum. But the majority of events that year were governed by my issues with my Dad, and going on a trip to New York to see a friend from my old psychology forum. In fact, there was a long hiatus from ZD during much of that year. A three-month active period, followed by five months of inactivity. Overall, 2010 would not have been much different for me without ZD. Well, actually, I might not have been motivated to finish playing the whole Zelda series, and might have drifted onto other games sooner. But aside from that, not much.
The next couple of years are quite another story, however. 2011 is the year that I got really interested in ZD. If I hadn't had ZD that year, my outward life would likely have been much the same. I would have gone to volunteer at the hospital, and I would have tried to get a job at Wal-Mart that didn't work out so well. The main difference is that I probably never would have gotten Skype, or tried participating in voice calls. I would likely still be focusing on ordinary forums entirely. I also never would have played Minecraft, learned how to host servers, tried to learn more about vBulletin, or attempted to play a D&D campaign. There were a lot of firsts for me that year. The only thing I can imagine is that perhaps I would have simply played more video games other than the Zelda series, might have put more of my energy into solitary activities such as reading that didn't involve other people, and simply allowed my social skills to atrophy completely for another couple of years.
The most important thing, though, is that I never would have met a few friends who taught me about courage and self-expression. A lot of things I used to think were harmful or dangerous were really just matters of personal taste, and were really only meant to be entertaining. I also learned how still other things really WERE harmful, and that there was always a line, but it was a line you had to draw in grey areas and further back. Not something you can be black and white about. I appreciate learning that lesson quite a bit, and while I might have learned it elsewhere, it might have taken longer and not been taught with as much clarity, fulfillment, or compassion.
Overall, I would say that my life would have still been fairly similar without ZD on the surface these past couple of years, and that I probably could have gone without it if it had not existed. But I feel that having had the opportunity to learn things here rather than elsewhere, with these people, was extremely meaningful and helpful. It helped open me to opportunities, people, and ideas that I might not have considered otherwise. It all happened in a very slow, building fashion that allowed me to let new things in slowly, in such a way that I didn't grow overly resentful or revolt against it so strongly that I didn't return.