Geyser is although made for our good , like everything it also has it's disadvantages. 
1. It takes a lot of electricity to heat the water.
2. Not always available everywhere.

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There are many advantages of geyser but also many disadvantages and that are ---- 1. It takes a lot of energy to warm a bucket of water
   2.If we have a habit of bathing with warm water than we face prolems with cold water.
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electric geysers are fixed, bulky. Have to be removed by electricians and fixed again when we shift houses. We cannot do it ourselves. The thermal insulation is not very good. The water does not stay hot for very long during winter. They do not function if there is no electricity and power cuts are frequent these days. One has to be careful with the connections and wires not to get shocks.