If you include all sentient beings in your analysis there's no question that the world has gotten _much_ worse over the past 50+ years. The number of animals living lives of unending torture has gone up and up during that time period. Any gains made by humans are a blip in the statistics.
I'm somewhat hopeful that we are in the middle of the time when that start changing, but until it does, I think it's quite clear that things have gotten worse, not better.