Jobs
A lot of people fail to consider the future aspects and consiquences of tattoos. As a result many people struggle to gain employment. If you can't cover it, don't get it (unless you have a strong financial background and can support yourself)
Here is a diagram, the red areas are key elements of were tattoos can be seen on the the body in average uniform.
Below is an image of prejudice characteristics of who someone is by where they are tattooed:
Prejudice
When people get tattoos they don't think about what some people may think.
Many will judge you to be a jouvenal criminal. (dependant on age) and what not.
'The only difference about a tattooed person and a person without tattoos is the tattoeod person doesn't care if you have tattoos'