Should I break up with my sofa?

Reasons I love my sofa:

1. It was a surprise gift from my husband
2. I've had it almost as long as I've been married
3. It's long enough to sleep on
4. It's neutral
5. It's good quality

Reasons I should get rid of it:

1. It's 15 years old.
2. The cushions look grimy (although they've been cleaned.)
3. The cushions are flat and bulging out at the front. (Would cost about $100 to restuff.)
4. The couch is 8 feet long and a pain to move or fit into any apartment we've lived in
5. It's more traditional/shabby chic than I am.
6. It requires a row of lumpy pillows along the back.
   
   

Reasons I like this sofa:

1. It's clean lined
2. It's half price
3. It's neutral
4. It's a shelter sofa (arms are as high as the back), which is a style I like
5. It's long enough to sleep on
6. It's almost two feet shorter than the sofa we have
7. The tufted buttons are cute

Reasons I'm not sure about this sofa:

1. The fabric is light, and the previous light sofa was a pain to keep clean
2. I will jinx my marriage if I get rid of the old sofa
3. I will have to part with some cash
4. It can't possibly last 15 years
5. What I really want is this sofa in charcoal grey.