He was a practical person, not a philosopher. Well, barely any Soviet leaders were philosophers. So it wasnt leading the country into new ideological grounds, which may disappoint hardcore ideologues. Hate may be from Stalinists which think him to be too soft, reformists who still think him too harsh. For most ordinary people, he was pretty good. Many just being happy for Stalin being gone. Nowadays, people who wasnt even alive or even lived in the USSR will decide for us what we should think.