Solo too darn short
I have played all the COD's since the first and can see the progression over the years. I truly believe that COD for the PC is a being phased out. Much easier to adapt a game to the antiquated non changing architecture of a console ( XBOX, PS, etc ), than the ever evolving changing PC. Also there is only so much run, jump, crouch, snipe, grenade dodging that you can do before it gets old.
So basically, its your money. The price is a bit high for what you get, but, if you love the franchise as I do, buy it and get what you want from it.