You too sound like you are a good guy, and I appreciate you getting back to me with your existential statement.
At 23 you havent' begun to live, even if you think you have done and seen a lot. Sometimes depression manifests itself not as feeling "down" but rather as feeling complete apathy - in other words, feeling much as you do about the world and fining life meaningless. You can also experience anhedonia (lack of pleasure) which is also a symptom of depression.
The symptoms you are experiencing could be caused by other ailments, which I should mention. Perhaps you would be willing to get a complete check up to see why you are feeling this way. Here are some other possible causes:
CADASIL syndrome; depression; Alzheimer
's disease; Chagas' disease; Creutzfeldt-Jakob disease; dementia
; Korsakoff's Syndrome; excessive vitamin D; Hypothyroidism; Hyperthyroidism; general fatigue; Huntington's disease; Pick's disease; progressive supranuclear palsy (PSP); schizophrenia
; Schizoid Personality Disorder
Disorder, and others. Some medications and the addictive use of drugs such as heroin may also cause apathy.
You can regain your enthusiasm for life. I hope that you will take a chance that your life is still good and it worth living.
Blessings to you,
Elliott Sewell, LPCC, NCC.