I agree with your take on credit-card touring. I'd much rather have a clean dry bed and a hot shower followed by a good meal after a day of riding, particularly if the weather is less than ideal.
If you stick to the plainer chain or mom-and-pop motels and away from major tourist areas the cost isn't much more than camping and the comfort is much better.
BTW, camping in tourist areas isn't cheap either and most of your "neighbors" will be in motor homes or trailers with generators and TV's. It will be neither economical, quiet or restful.
For meals, the same technique applies. Avoid high priced restaurants and your daily meal costs can be very reasonable too.
The final attraction is being able to ride a bicycle with minimal weight that retains most of it's agility and responsiveness. Somehow riding a packmule loaded down with a twice its weight in luggage doesn't seem like plesant riding, it seems a lot more like work.
Oh, yes, credit card touring doesn't have to isolate you from other people or eliminate the possibility of being invited to stay or eat at someone's home.