Lack of Consideration. 1  Past consideration is not valid. Something that is already done is done, and it does not change the legal position of the promisor. 2  Preexisting duty does not count as consideration. 3  An illusory promise, or one which the promisor actually has no obligation to keep, does not count as consideration. The promise must be real and unconditional. This doctrine rarely invalidates contracts; it is a fundamental doctrine in contract law that courts should try to enforce contracts whenever possible.
In parts of the world with more conservative social traditions, the average would be considerably higher. i had mine when I was 13 but idk if thats the average age. I would the average age would be from 12 to 15. I had mine when 13, so I would say that is around the average age, but that is just speculation.
For men, the average age at first marriage is 28.7, while the average woman is getting married for the first time at age 26.5. In 2007, the average age at first marriage was 27.5 years for men and 25.6 years for women, according to the report. During the same time frame, fertility rates -- expressed as the number of live births per 1,000 women age 18-44 -- decreased from 69.3 to below 65.