Why do people buy MBS?

Could you please elaborate on the motivations behind individuals investing in Mortgage-Backed Securities, or MBS? Are they primarily driven by the potential for higher yields compared to traditional investments? Do investors perceive MBS as a safer alternative, given the diversification across multiple mortgages? Are there specific market conditions or strategies that make MBS a more attractive investment option? Furthermore, how do investors weigh the risks associated with MBS, such as prepayment risks and potential defaults?