With his current wealth and strength, marrying a wife posed no real pressure on him.
However, as he wholeheartedly pursued immortality, taking a wife now could potentially introduce some distractions to his cultivation.
After all, he was a man of flesh and blood, and marrying a beautiful wife was bound to lead to a harmonious marital relationship.
Many books mention that the allure of women can easily corrupt one's dao heart.
If his wife were to get pregnant and bear one or two children, that would be even more troublesome.
He could understand Wang Furen's concerns. In these turbulent times, with his daughter Wang Wanyan being so beautiful, it would be more secure for her to marry earlier.
However, if Qin Niu wasn't powerful enough, even marrying him might not ensure her safety.
If a strong man coveted her beauty, he would have the power to take her by force.
Such incidents were too numerous throughout history.