I'm a similar age to you, and I've had up close experience of a few deaths too. One of my grandmothers literally went to sleep one evening and never woke up. (She'd been getting weaker over time so had been living with us, with my parents staying in the same room as her so we know she didn't suffer anything). My other grandmother had cancer in her 90s and opted against having chemo. She died peacefully, in hospital, with family around her - pretty close to the "movie version". She didn't need euthanasia, just a medical team who cared enough about her wishes to have a good death not to browbeat her or the family into having treatment she didn't want.