In my mind what sucks about SAAS is the organizations, not the idea of paying a little money every month. Specifically the executives, managers, and product people who steer the decision making inside SAAS companies. They make the product suck as time goes on. Poor or non-existent customer service for paying customers, feature bloat, greed, it's just a very predictable course where these products get worse over time while the people responsible fail upward