I do think that this is, generally speaking, the best time to be alive. There are individual elements of the past that might be better (the economy of the late 1990s, the poetry of the 1930s), and certainly this time is better for some people than it is for others, but on the whole I think that the world now is better than any previous point in history.
I do think that technology is a big part of that, and it's not just the gadgets. In a couple of decades of popular usage, the internet has had the kind of impact that can only really be matched by the rise of trains and the industrial revolution. It has not only altered the ways that we communicate (and, yes, I would argue for the better), but it is also leading to substantial, political changes on a global scale. Yes, these things could happen without the internet, but what might have taken months or years, now only takes days.
But even then, the internet is just one piece of the puzzle. Medicine has made big leaps just since I was a kid. Hell, there's a common vaccine for chicken pox. That was a standard part of growing up just a decade or so back. That's not to mention advances with HIV/AIDS, cancer, the fact that we might soon have artificial hearts that don't even pump, and so on.
Of course that doesn't mean that everything is perfect. There are plenty of things that I would change about this time, including political and other factors that keep these advances out of the hands of people who need them, but I don't see those things as being any better in the past. I do generally think that the future is going to be better than the past, and don't see that changing any time soon. That doesn't mean that every moment is going to be happy and sunny (the Aughts sure felt less sunny than the '90s, but I still think it was a better time in many ways), but I still see things progressing going forward.
On a related note, I still don't buy the argument that kids are more self-absorbed today than they were in the past. The difference is that we see their self-absorbtion. Teenagers have been self-absorbed at least since the 1950s, when the modern idea of teenagerdom developed, and will always be self-absorbed. That's part of being a teenager. I guarantee you that today's 15 year-old is going to have the same complaints about the kids in 2026 as people made about them, which are the same complaints made about teens in 1994, 1979, 1964, and 1949. I promise you, you won't find a modern time when teens are considered modest and responsible by all of their elders. You probably never will.
Now, that all said, if someone handed me a one-way ticket to the early Cretaceous, I'd have a hard time turning them down.