Hadith: I stood at the gate of Paradise and saw that most of those who entered it were the poor and destitute. The people of means were held back

عن أسامة رضي الله عنه عن النبي صلى الله عليه وسلم قال: «قُمْتُ على باب الجنَّة، فإذا عامَّة من دخلها المساكين، وأصحاب الجَدِّ مَحْبُوسُونَ، غير أن أصحابَ النَّار قد أُمِرَ بهم إلى النَّار، وقُمْتُ على باب النَّار فإذا عَامَّة من دخلها النساء».
[صحيح] - [متفق عليه]

Usāmah ibn Zayd (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "I stood at the gate of Paradise and saw that most of those who entered it were the poor and destitute. The people of means were held back, whilst the people of Hell had been ordered into the Fire. I stood by the gate of Hell, and saw that most of those who entered it were women."
[Authentic hadith] - [Narrated by Bukhari & Muslim]

Explanation

The majority of the people who will enter Paradise are the poor and needy. That is because they have no wealth, so they will not be held accountable for what they did with it, and Allah, out of His great generosity will reward them in the Hereafter to make up for the things they were not given in this worldly life. As for the wealthy and affluent, they will be detained for some time on the Day of Resurrection because of the lengthy reckoning of their accounts, due to the wealth and influence they had as well as their indulgence in their desires and passions. The lawful pleasures of this worldly life entail accountability, and the unlawful pleasures entail punishment. The poor will be spared both because they were deprived of such pleasures. Also, the majority of the denizens of Hell will be women because they complain much and are ungrateful to their husbands.