food baskets for blessing:
Wiki article in Polish:
Według badań CBOS (2000) w zwyczaju święcenia pokarmów w Wielką Sobotę uczestniczy 95% obywateli Polski
(According to a 2000 poll, 95% of Polish citizens respect the custom of blessing food on Holy Saturday)
It's just one of those harmless traditions, noone see why s/he would have to abandon it :)
I respect it too, and I haven't been to a church service for 20 years or so (except weddings and funerals)
Wiki article in English: en.wikipedia.org/wiki/ŚwięconkaEdit:
Without going into religious considerations, this custom is usually loved by kids (of course most of them want to eat before Easter Sunday, so you just have to keep the basket out of their reach, but they are also introduced to the concept of fasting which is good as a an example of abstaining from certain things, usuful later in life, as you can't get everything you'd like to have), therefore when they grow up, they keep those fond childhood memories.
Just one of the reasons I can think of right now.