If within a year you plan to be in Disney parks at least 10 or more days then I think it is definitely worth it.
We live in NY and will be going to WDW for 8 days in Aug. then again in 4 days in Sept. (for
MNSSHP) and chances are will probably go again at least once in 2015.
Even if we were just taking the 2 trips listed I would go with AP (which we did). The cost is about the same if your there 10 days (a savings if going more).
Plus in addition to park entrance you get some nice discounts...you get 10% discount on merchandise - most stores on Disney accept it - just ask when purchasing - even if you purchase food from one of the gift shops you get discount on food. You get 10 or 15% discounts at certain restaurants / CS - it's not many, but there are some...plus you get 50% discount on mini golf and discounts on certain recreation activities.
You can purchase Tables In Wonderland for $100 (usually $125 to FL residents and
DVC). With TiW you get 20% on TS meals including alcoholic beverages. There are a few CS places where you can use TiW (POP food court) and you can also use it at some of the bar/lounges just for drinks. If you think you're going to spend more than $500 on these types of meals then TiW will be a savings.
I like having the benefits of an AP..and as soon as I booked my 2nd trip and realized we will be in Disney Parks at least 11 days...I bought our APs.
ONE NOTE: If you like water parks and plan on having some of your park days be water Parkrdays then you might want to go for a 10-day or 8-day ticket with Water Park option. You can get AP with waterpark but that costs more and then at that point a ticket with water park option would probably be a better value for you. We're not waterpark people and we get AP without water park option..we like the resort pools better.