One of the controversial aspects of discussing the (imminent) rebuilding of our Holy Temple is that of the sacrificial service. Many Jews unfortunately do not yearn for a return of the Shechina to Yerushalayim. Even many of those that do are fundamentally uncomfortable with the idea of sacrifices in "this day and age".
Yet on closer examination, there seems to be a double standard at play here. Many of the folks who think the sacrificial service is outdated and shouldn't be restored might pontificate that view over a nice steak or plate of ribs. Possibly they would enjoy chicken wings to go while explaining how a good part of the Torah should be tossed into the dustbin of history.
There's an old saying that people who enjoy cold cuts and the law shouldn't watch either being made. In our sanitary society where meat is something that comes shrink-wrapped in a package, all clean and ready for cooking, we have forgotten the mess it takes to get it to that stage. We have no trouble eating beef but the idea of watching a cow getting killed, sliced up and then offered on an altar seem to be repulsive. It almost makes one want to be a vegetarian.
Except that this also isn't much of a solution. As Rav Dov Lior recently noted, Rav Kook, zt"l already pointed out years ago that a humankind that isn't prepared to show mercy and love unconditionally to one another isn't ready to embrace the concept of vegetarianism out of compassion. According to Rav Kook, it would only be in the future when humanity is raised up spiritually to see the spark of holiness that is an intrinsic part of all life that vegetarianism, not out of compassion for animals but rather because of an awareness of that holiness, would be in order. Until then we would eat meat as part of the natural order of things. And if we're going to eat meat, how are sacrifices any worse other than forcing us to confront the part of our dietary needs we don't want to see?