There are 613 mitzvot enumerated in the Torah. There are many mitzvot (more than half) that are not directly applicable today e.g. laws pertaining to the temples. Despite there being some remnants of these mitzvot in Rabbinic law, why, if the Torah is timeless, is so much not applicable?
Aside from learning about the non-applicable mitzvot or in order to be in preparation for their future application, why were these mitzvot included if they would not be used for thousands of years?
I am assuming, of course, that the Torah was written with all generations in mind.