For me it comes down to basically having more and more things to feel worried/anxious about and fewer and fewer things to feel excited about every year. Partially I guess it is normal part of aging (but I'm supposed to be in my prime year for fucks sake) but there are also objectively shitty things that make it difficult to be hopeful that my mood/feelings about the world will improve. The acceleration in enshittification of the internet doesn't help. At least Lemmy is a breath of fresh air in this regard.