Indeed, someone has the strength to restrain their emotions and feelings, while others are not so strong, so we hear complaints from them. It's natural. We are all people, with our feelings and moods. I'm also optimistic and don't allow myself to think about the bad, as I clearly understand where I'm and what I'm doing here.
I like your point of view, as humans complaints is normal especially when one loses funds in investment. But being optimistic surpasses pessimism since that's the only way not to sell off at dips. I do believe the crypto market will experience an uptrend next year, but it depends on coins we hold for long term. What I mean is this, someone holding a dead coin should not expect miracles in future.