Are frequent flyer programs worth it?

As a long time Delta Sky Miles member, I have enjoyed status that has given me lounge access, free checked luggage, seat upgrades, and priority boarding. These are nice perks! When I was living in Detroit, which is a Delta hub, and flying frequently for work, it made sense to have a Delta airline credit card. I would rapidly gain status just by flying for work and using my credit card. Once I moved to Arizona, which is not a Delta hub (although they do have flights from Phoenix), it became much more difficult to find flights on Delta that made sense. My rule has always been to book the cheapest and most direct flight to any destination. So, the questions are: 1. Do I get rid of the Delta affiliated AmEx card and use a credit card that gives me cash back? 2. Do I get a non-affiliated credit card that gives me miles that can be used for any airline? 2. Do I get a card with American Airlines, which is a Phoenix hub, even though I'm not fond of the airline? or, 3. Do I just hang onto the AmEx card and accrue mileage at a slower pace?

Part of the problem is that once you have flown with "status" and enjoyed its benefits, it's more difficult to endure boarding group six and the fight for overhead bin space!

Right now, I am leaning toward keeping the status quo. The AmEx reserve card also provides me with travel insurance, which has been a wonderful benefit with my frequent travels. I also have enjoyed Delta's website, app and customer service experience much more than other airlines, so I feel somewhat loyal.

I just read this article and which prompted this blog post.

I'd love to hear your thoughts. Cheers, Laurie