Indeed investment is not for everybody in my opinion.
Firstly one requires a certain level of financial understanding.because not everyone has the knowledge to financial decisions and choices.

Secondly, when going into investing one needs to know that it involves risks and bravery because some individuals may not be comfortable taking risks or may not have the mind and courage to go into investing.

Thirdly, investing needs lots of patience, commitment, time and efforts to research and monitor their investing.because most people just run into investing without proper knowledge and information, and then ends up blaming their self or people that let them into investing.

 Lastly, personal financial situations vary widely. Some individuals may have immediate financial needs or obligations that take precedence over investing, making it impractical for them to allocate funds towards investments.