I have one or two Tattoo's. 5 of which I'm totally happy with, one which I want lasering away and a sleeve done to cover scarring, and two which I did myself with a homemade setup that need serious reworking. The one I want lasering is a constant reminder of something I'd rather forget, and due to it being dark would not lend itself well to a cover up. I dread to think how much laser removal would come to, but once I'm earning, intend to start saving to get rid of it!
Now, at the time, there is no way on this earth I'd have thought for one second I'd regret it in years to come. So it shows just how sure you need to be about something. I'm stuck with it in plain sight and it brings nothing but bad memories every day. Even if you think a cover up would solve any regrets, it's not always possible, depending on what you have. I've thought about the sleeve that will eventually replace it for a very long time, and it has no emotional relevance to regret in the future. But I learnt a costly lesson with that tattoo.
So as Phil stated, anyone thinking of getting inked, be very sure of what you get, and when you think you're sure, think for longer until you're as certain as you can be that what you have inked into your skin you can live with if things change.