Banks do have some practices that may cause controversy and doubt when selling financial products. The following are some bank behaviors that may be considered to ruin people's outlook on life:

1. False propaganda: When promoting financial products, some banks may exaggerate the returns of the products or conceal risk information, thus misleading customers.

2. Sales pressure: In order to achieve sales targets, some bank employees will exert excessive sales pressure on customers, and even use fraudulent means to promote financial products.

3. Inappropriate sales: Banks may sometimes sell high-risk financial products to customers who do not have the risk tolerance or do not understand the risks of financial investment, causing customers to suffer losses.

4. High commissions: The salaries of some bank employees are linked to sales, and high commissions may lead employees to promote financial products that are not suitable for customers for personal gain.

5. Lack of transparency: Information such as the fee structure, investment risks and return methods of some financial products may not be clearly stated, resulting in customers lacking a comprehensive understanding when purchasing.

6. Lack of responsibility: Some banks may not be responsible enough in terms of after-sales service and risk warnings, and cannot promptly remind customers of the risks they may face.

However, it should be pointed out that not all banks have such problems, and many banks are also committed to providing honest and transparent services. When purchasing financial products, customers should actively obtain relevant information, understand the features and risks of the products, and compare products from different banks to make informed decisions. At the same time, if you encounter any problems or concerns, you should communicate with the bank in time and seek professional consultation.