Why did people buy shares in the 1920s?

People bought shares in the 1920s primarily due to the post-World War I economic boom, which led to increased consumer confidence and rising stock prices. The advent of new technologies and industries, coupled with easy access to credit, encouraged speculation and the belief that stock investments would yield quick profits. Additionally, many individuals were drawn to the allure of wealth and the idea of becoming part of a prosperous economy, contributing to a Stock Market bubble that ultimately culminated in the 1929 crash.