Ignore Alexa also. 

I rarely fly business/first unless it was work related and for longer or overnight flights across the pond.

I caught a pod upgrade to Australia (22 hours flying) once, and that was fantastic— for work. 

International flights for 5+ hours that offer Premium Economy is worth looking into for in between value although some airlines have various Premium Letter codes like United so be careful. I think their Premium+ is the good one. 

It depends who is paying, how long, cost, and the time— and sure, affordability. Flying business for every flight— is it necessary? But you’re also likely free to choose so your choice— all good.