I've always had an interesting love/hate attitude about tats.
I have one that I got about 15 years ago and I absolutely love it. However, I put a great deal of thought into the subject matter and although it's moderate sized on my right forearm, I definitely didn't want anything too big or obtrusive, or something that was "offensive".
I find that ONE tattoo that is strategically positioned and meaningful to the individual can be hot and edgy, and I got an overwhelmingly positive feedback to mine; people thought of me as very clean cut and straight-laced and when they saw my tat (which they can only see when I wear a short-sleeved and/or sleeve-less shirt), they thought of me as being much cooler and more hip.
But personally, more than one tat bothers me. I will never get another and I don't find multiple and/or enormous tat mosaics that cover half your body as being attractive. I think it takes away from people who have attractive physiques, and majorly draws negative attention to those who don't.
In some (Eastern and Indian) cultures, tattoos are of great social significance, but in the Western world, this is largely not the case, so I find people who cover themselves with tattoos as somewhat odd, and it causes me to wonder about that person's mindset and social skills, but I keep those opinions to myself, and for the most part, ignore the tats and respond to those people as individuals just like I would anyone else.
But it's an individual choice that's perfectly legal. No one else has to like it and no one who does it deserves to be persecuted for it. If someone doesn't like it, they should smile politely and keep their negative opinions to themselves, especially if they don't know the other person well.