question on liability insurance

[paulw1283]

If one decides to sell a product that is "very safe" by normal people's standard, which means there are no way the product can hurt anyone unless grossly abused, such as swallowing...is it still necessary to get liability insurance?

We live in a society where people do not like to take responsibility for their own actions so I would like protect myself 100%.

If I do need liability insurance, what is the proper procedure to get one? And how expensive are they? Thanks