It is really just been to be fun and cute, you don't have to buy them if you don't like them.. Christian "Easter" isn't really about bunnies and candy anyhow. But if you look at the real roots of Easter you would find the Spring Equinox, which does celebrate fertility and reproduction, so maybe the images aren't so far off...
"Pagan roots of Easter lie in celebrating the spring equinox, for millennia an important holiday in many religions. Celebrating the beginning of spring may be among the oldest holidays in human culture. Occurring every year on March 20, 21, or 22, the spring equinox is the end of winter and beginning of spring. Biologically and culturally, it represents for northern climates the end of a “dead” season and the rebirth of life, as well as the importance of fertility and reproduction."