The question should be "Do we really need to target the over-50s as though they are all clones?" and the answer is a resounding NO.
The over 50s include people of 50, 55, 60, 65 who are working fulltime at all kinds of varied jobs and juggling child-care for their children or grandchildren plus their elderly parents, people of 70, 75, 80 who have retired and are getting on with whatever interested them earlier, or whatever they now have time for, and may still be looking out for even more elderly parents, people of 85, 90, 95 who may (or may not!) have health problems and/or be in sheltered accommodation or in care.
Some of the over-50s are in excellent health, some have chronic or acute ailments. Some like sports and exercise, some can't stand them. Some eat traditional meals, some are vegetarian, some have to avoid certain foods. Some buy designer clothes, some buy chain-store or supermarket. Some shop at Asda, some at Waitrose, some at the corner shop. Some vote Tory, some Labour, some SNP, some UKIP. Some live in detached mansions with acres of grounds, some are in a high-rise flat with a smelly lift.
If you offer them well-designed and well-made goods at reasonable prices they will buy them, but which goods and which marketing will influence them to buy depends entirely on the personality, history, life-style and circumstances of the individual. Just treat them as intelligent and experienced human beings.