REMEMBER: These are all MYTHS! Believe them at your own risk.
Myth #1: Older people are either cranky or depressed.
Myth #2: Growing old means getting sick.
Myth #3: Senility is inevitable.
Myth #4: Old people don't have sex.
Myth #5: Seniors are incapable of learning anything new.
Myth #6: Older workers are less productive and can't keep up.
Myth #7: Memory loss is inevitable.
You might also want to check out SeniorsAloud's post on the same topic:
Debunking the myths of ageing (includes video of Palm Spring Follies)