Two reasons I know of.
1. Cards were used in many gambling games. Because gambling addictions can be extremely destructive, many Christians preached out against gambling and card games. Although card games don't have to involve gambling, they still got a bad rap just by association.
2. Cards were used in divination, which also gave them a bad rap. Of course, anything can be used for divination by someone who really wants to try, so this argument is also moot.
It depends on what religion you're talking about. There are religions where it is considered a sin (particularly mainstream Christianity, including Catholicism and Mormonism), and religions were is is not considered a sin (most branches of Judaism, Unitarians, Pagans, some Christian denominations)
The belief that going to a casino is a sin varies among different religions and individuals. Some religions view gambling as a sin because it can lead to addiction, greed, and financial harm. Others may see it as a form of entertainment. Ultimately, whether going to a casino is considered a sin is a personal and moral decision.
In some religions, such as Judaism and Islam, eating pork is considered a sin because it is forbidden in their religious texts.
In some religions, such as Judaism and Islam, eating pig is considered a sin because it is forbidden in their religious texts. In other religions, such as Christianity, there are no specific restrictions on eating pig.
In some religious beliefs, circumcision is considered a religious requirement or tradition, but whether it is considered a sin not to be circumcised varies among different religions and interpretations of religious texts.
The concept of killing insects being a sin varies among different belief systems and religions. In some religions, such as Jainism, all living beings are considered sacred and killing any living being, including insects, is considered a sin. In other belief systems, killing insects may not be considered a sin as they are not seen as having the same level of consciousness or moral significance as humans or other animals. Ultimately, whether killing insects is considered a sin depends on individual beliefs and cultural norms.
In many religions, saying "God blasphemy" is considered a sin because it shows disrespect towards the divine.
The belief that saying "damn" is a sin varies among different religions and individuals. In some religious traditions, using profanity or taking the Lord's name in vain is considered sinful. It is important to consider the beliefs and values of your own faith and community when determining if saying "damn" is considered a sin.
The concept of sin is subjective and varies among different belief systems. In some religions, killing bugs may be considered a sin if it is done unnecessarily or without respect for life. It is important to consider your own beliefs and values when determining if killing bugs is considered a sin in your personal belief system.
The concept of sin is subjective and varies among different belief systems. In some religions, killing any living being, including bugs, may be considered a sin. In others, it may not be viewed as a sin. It ultimately depends on individual beliefs and values.
The concept of whether castration itself is a sin varies among religious beliefs and cultural perspectives. In some religions or societies, it may be considered a violation of natural order, while in others it may be accepted for specific reasons like medical necessity. Ultimately, whether an action is considered a sin depends on individual beliefs and moral principles.
Different religions and belief systems have varying views on this matter. In some religions, any sexual activity outside of marriage may be considered a sin, while in others, consensual physical intimacy between partners may be acceptable. It is important to consider your own values, beliefs, and boundaries when determining what is appropriate in your relationship.