The climate is changing at the moment for sure, but it doesn't appear that there is some kind of long term stability/balanced/harmonious climate state, and I mean in a thousands years timescale or something like that. The Yellow Emperor, Caesar, Charlemagne, Louis the 14th, and Lincoln all had different climate as far as we know from records and accounts. Keep going back in human history before writing and its generally warmed since. I'm not sure if we can really say the climate is altered forever and that this particular observed period is vastly different than other fluxy periods. I think the human lifespan is short compared to what a significant climate episode likely is. A significant episode could be like an ice age, or some other event that extends past a few hundred year period.
Is warming over 50 years meaningful? Will it last 10,000 years? I dunno. The former is within our lifetimes so it gets the most consideration since that is the only time scale anyone living can experience.
Its 29 here, clear sky, light breeze today. Pretty normal for this date and locale. Does that matter?