The key is finished
Despite how cold and distant great powerhouses appeared to be, the amount that had completely detached themselves from their emotions was almost null. No one who had strived to reach eternity was free of desire, and the more powerful they became, the greater those desires would be.
It is very normal for powerful life forms to see their families pass away, especially if these were formed during their youth when they were still weak. Those who did not care about that type of bond would not be affected by that, but many found those relationships extremely significant.
To those types of people, desolation and loneliness could affect their minds and their ambitions. Fortunately for them, the greater their souls were, their higher their control would be over their emotions. Even those with weak wills could endure extreme solitude if their souls reached a high enough boundary.