Carbon fibre is a compromise... strength, rigidity, weight...carbon does suffer from wear...best way to think about it...is how much wear and tear on your body has it saved you, how much have you made from the pole? etc, etc...
If there was something better I would buy it but Alex and Gardiners do produce 'exceedingly good poles'.
Personally I work my SL-X and other poles hard, they are not treated with kidd gloves, just tools to make the cash, when a pole is getting a little too tired, it is either dismanatled and used as spares or completely cut down as a 'Super Mini'. If a day to day use pole lasts me 18months I am happy and willing to spend money on another.
If you want something that will last and last...perhaps composite will fair better?
Also Alex and his team are great to deal with..so they get my cash over other suppliers.
Cheers
Dave.