Blissfully ignorant

I like to think sometimes, that there really isn't anything outside of my subjective reality. Without getting too freakishly deep into quantum physics and all the other psycho babble that's out there, I like to be blissfully ignorant at times.

I like Thanksgiving Turkey, I don't need to know how we get said turkey, per se, I just want to eat one. I have a friend who works for Jeannie-O Turkey herders out in Minnesota. He thought that it would be both beneficial and educational to give us a virtual tour of the farms out there. From the hatchlings all the way out to the slaughterhouse, and the V shaped knives that remove the turkey's head from the neck. Do I need to know this information? No I don't. Do I need to be educated on the ways of the Turkey? Absolutely not. Do I want to remain blissfully ignorant on the life of a turkey? A very resounding yes.

I know that there are people out there who are very much dead set against eating one of God's creatures, and we should all just go without this barbarous tradition, but I have to say just one thing, Not eating meat is a choice, eating meat is an instinct.

Question

So I was thinking, Catholics believe in heaven, but they don't believe in past lives. So if when you die and go to heaven, do they consider this life a past life? If so, does that mean that this life doesn't exist?

I'm willing to listen to points of view.