Well, those are the questions, aren't they?
Personally, while I enjoy a lot of the features of "civilization" (like the things electronic that bring us to this forum), and while I can appreciate the advantages we have over previous generations--longer life spans, eradication of some diseases, etc.--I also mourn the decline of the species from the days when we were roaming the savanna.
What do I mean, the decline of the species? Consider what we were like back then: while we had very little in the way of technology, and a much more limited intellectual life (no formal education, little or no written language, no real sense of history), we were magnificent creatures; we could live in climates that most of us today would consider totally inhospitable; we knew how to survive with our bare hands and what primitive weapons were at hand; we lived close to the land and adjusted to the rhythm of the seasons and the weather.
Except for a very few people who venture out on survival outings, we (most of us, anyhow) have lost all that. And the race will probably never recover that; the next global calamity will probably finish us all off, once the cocoon of our civilization has been stripped away from us.