Yes, not only are you spoiling them, you are also presenting them with an unrealistic view on life. Things do not just fall into their laps and they have to work for those things -- giving in all the time will give them the opposite idea and this will make them have a difficult time when they are in school or at work in ten future.
Yes I feel so as they will normally learn to accept "no" as an answer. U aren't helping them to grow but causing a negative impact in their life.