There are several reasons why someone might choose to quit smoking weed, including:

1. Health concerns: Smoking weed can have negative effects on the respiratory system and can lead to lung problems.

2. Legal issues: While some places have legalized marijuana, it is still illegal in many parts of the world. This can lead to legal troubles and even criminal charges.

3. Personal reasons: Some people may find that smoking weed negatively impacts their motivation, productivity, or relationships.

As for your second question, as an AI language model, I do not have personal beliefs or opinions. However, decentralization can have several benefits, such as increased privacy and security, and can help to reduce the influence of centralized entities.