Tsunamis: They destroy human homes
Why having no home is bad for humans
First of all while the homes are getting destroyed they can fall and crush humans, just imagine getting crushed to death by your own house. Next humans are exposed to environmental hazards such as rain, snow, hail, heat, mosquitos, Etc.
A lot of money is wasted as just to repair and build cities and homes, after all after the boxing day tsunami over $13.5bn dollars has been used to repair the damaged places yet not all them are fully repaired yet.