Victims at this time

Hello Rabbi,
We got to talk in reserve about the Temple and the anticipation of its construction, and the secularists there raised the well-known question regarding sacrifices, which I will reiterate and present from my perspective as a religious person:
Work in the Temple is perceived today in the eyes of modern man as something very crude and pagan – slaughtering an animal, throwing its blood on the altar, and then burning its internal organs over fire, it doesn't sound very sympathetic, to put it mildly.
According to the Torah's command, on the face of it, there is no possibility of avoiding the act of sacrifice while the ביהמק is in effect, because while there are sacrifices that are not obligatory to bring, such as a sin offering that comes only for a sin, and it appears that a person volunteers it of his own free will, after all, there are public sacrifices (such as the Tamid sacrifice and the additional sacrifices on Shabbats and holidays) that the Torah commands to be offered in any case.
Regarding the whole-animal sacrifice, it would seem reasonable to say that it is not difficult, because it is no less than the slaughter of an animal in our day, which is accepted today by all meat-eaters of all kinds, and the Torah comes and says to simply do it in the Temple and eat the meat in holiness (the Ramban interprets that this was the situation in the wilderness at the Tabernacle – it was permissible to eat only whole-animal meat, and when they entered the Land, even profane meat was permitted). However, on second thought, the difficulty does not stem from the actual eating of meat, but from the divine requirement to do an act that involves supposedly "dirty" dealing with blood and meat. The question is, is this what God expects us to do? God, blessed be He, is perceived today, at least as a humane and merciful God who has nothing to do with such things! On the other hand, I thought that perhaps our view today is incorrect, because if this is the role of the animal, then it reaches its correction and purpose, and this is good for it.
One of the religious guys in the reserves raised the possibility that perhaps the sacrifices were really intended only for that period when idolatry dominated the world in a similar way (as Maimonides did in his Teachings of the Perplexed), and that perhaps in the Temple that will be built, this will not be the case, but as far as I know, no such system actually exists. The Book of Ezekiel also mentions the Third Temple with sacrifices to be offered in it.
In any case, I would love to hear your opinion on the matter.
thanks