Why did Krishna steal butter and dance with the Gopikas?

[Is it not a black scar on the full white moon?] First we must understand that the real aim in following Dharma (justice) is only to please the Lord. The Lord is the Protector and Dharma is the protected. The protector is always greater than the protected. Among the other souls [while interacting with other souls] you have to reject injustice and vote for justice. But when the Lord competes with justice, you have to vote for the Lord. In Pravritti [worldly life], justice and injustice compete and you have to vote for justice. But in Nivritti [life devoted to God] the Lord competes with justice and you have to vote for the Lord. In fact, you don’t have the patience to understand what the Lord does, and you simply blame Him. There are certain subtle aspects of Dharma (Dharma sukshma), which look like injustice. Only with deep analysis can one understand the Dharma sukshma.

The butter indicates the extra stored money of the cowherds [Gopikas]. You are expected to take money from this world, which is required for your minimum needs. This entire world is the money of the Lord. But you are earning extra and storing it for your future generations due to greediness. You must donate that extra money to the Lord who is in the human form and He will distribute it to His devotees for their upliftment. If you are not doing this, the Lord will steal your money, which is actually His own money. Butter is the fruit of their work, which is money. Similarly He danced with the Gopikas who were sages in their past births. They prayed to Him (Rama) in their previous birth for the same. He only fulfilled the boon given by Him to His devotees.