A century ago everything was organic. There were no plastics to buy on a daily basis, there was no glyphosate in food. There might have been tincture of arsenic and other nasties, food might have not been affordable and so on, but progress for the better does not mean that everything is better. What point is there if things are better but everything is polluted?
I do not believe that community has got better over the last century, before the television made its appearance in every front room people did go out for their entertainment a lot more. Village halls, church buildings and public houses used to be where people would go to participate in things. The world was not a spectacle to be watched. Today it mostly is.
We also live in an age where the motorcar and planes are omnipresent. Kids used to play in the street, now they have Snapchat. One day of playing in the street - even if bullied - is worth an eternity of Snapchat, even if not 'cyber-bullied'. Cars also have a way of killing all forms of life, not just people's pets but every life form that is not well versed in the Green Cross Code. The billion or so car drivers think it is their divine right to right of way, that climate change does not concern them and that bicycles are for kids.
As for the wonders of scientific advances and breakthroughs, the ancients in Greece, Persia and elsewhere worked out all the difficult maths. But 99% of people get lost at the mention of cosine and would not be able to solve a simultaneous equation even if their life depended on it.
Even this longer, healthier lifespan you speak of is questionable. Who doesn't have elderly relatives that have been on some kind of life support for decades? Fed through a straw, needing a bed hoist, this might be better than dead, but if the Alzheimer's has set in does it even matter? This extended life also ties up the potential of younger generations, care workers who pop by three times a day do not come for free, they too have potential and, whilst they are doing the bed hoist thing, they are not writing the next War And Peace or spending time with their own family.
I am playing devil's advocate here, however, we live in an era of Trump and maximal human stupidity. The baby boomer generation had a better gig in the last century.