The word "Easter" does appear to have its origin from a pagan goddess. Although there are other possible origins for the word. But days of the week get their names from pagans gods, as do many months of the year. Yet I have never heard anyone claim that since Christians go to church on "sunday" they are worshipping the Roman sun god. Nor that if Christians go to church during January, they are worshiping the Roman god Janus.
The Christian celebration comes from the day on which Jesus rose from the dead, and draws many of its traditions from the Jewish Passover which is 1500 years older then the Christian faith.
Good luck finding day in the year that someone is not already celebrating as a religious holiday for some other faith. The Jewish Passover, the Christian holiday, and many pagan holidays all occur at or near the solar equinox. Since the name "Easter" was already applied to that day, it was adopted by the Christians (just like we did the days of week and the months.) It is easier then called it "the Christian holiday that comes on the first Sunday after the first full moon that follow the solar equinox."
As far as the idea of using the symbol of eggs or rabbits, hopefully you are smart enough the realize that any symbol means whatever the people who use it decide it means. If Christians want to use the symbol of a rabbit, that has nothing to do with how others used that symbol in the past. If that was true, then the Gay Rights Movement with its use of the rainbow as their symbol must have evolved from the Christian church because it used (and still does) that symbol for 2000 years. We know that is not true.
Christians celebrate the resurrection of Jesus. The Assyrians worshipped a fertility goddess. No connect between the two.
Thanks for playing, better luck next time.