Hindukid, I know where you're coming from. Although I really enjoy those C and F cabins on international flights, I cut my teeth on transcons in coach (granted, UA E+ and AA's MRTC, mostly). I don't have much of an issue sitting in coach for a long flight, and generally prefer to save the miles, especially domestically. I tend to value miles at about .01 to .011 cents each. Because of that, one thing I've done is switched my credit cards to cash rebate cards that pay 1-1.5 cents per dollar spent, which to me offer more value and flexibility than miles cards (usually with no annual fee).

Plus I've rediscovered the value of Standard Awards. To me, the best miles deal right now is UA's 40,000 miles Standard Award. Any flight, any time if there is a seat available, and the cost (according to my valuation) is generally $400 to $440 (plus security fees). With transcons often available now for well under $300, I often purchase those tickets and save the miles for Standard Awards for Thanksgiving or other holiday travel. That way I can change those travel plans almost at will. At the same time, I build up miles for those international trips that tend to be pricey.