How long do your family room sofas last?

I am pretty sure I want to buy new sofas for my family room. I want to change the color, fabric, and style. I am feeling badly about it, because you can still sit on the furniture, and I am typically loath to discard something before its’ time. I could sell them I guess, but of course get very little for the set. It’s why I still have huge old square TV’s and many other outdated things. If it still works I hate spending more money for something new, and I tend not to be the type who just gets rid of something if it is still useful in a practical sense.

The couches are about 12 years old. They are leather (I will never buy leather sofas for my family room again). I want a sectional, which I can’t believe I am saying, because years ago I thought they were awful. Funny how tastes change. I want to lay down on a long sectional while watching TV with my husband perpendicular to him. I want a nice long one where people can comfortably sit next to each other without being practically on top of each other.

Should I do it? What would you do?