the.com/midlife crisis

means A period, typically in one's 40s or 50s, of anxious self-reassessment triggered by the sudden visibility of mortality and unmet expectations.

from Coined in the 1960s by a psychoanalyst writing about the psychological turbulence of middle adulthood, when the sense of time left to live starts outweighing time already lived. The phrase caught on fast and soon detached from its clinical roots, becoming shorthand for anyone buying a motorcycle they don't need.