What does this tattoo say?

[SpaceNambo]

(something) your heart?

After?

Why would anyone want the same tattoo as other people?

You just get the design off a card. They probably don’t give it much thought or are otherwise unconcerned.
Im more mystified by the symbolism of the key which doesn’t exactly align with the words, to my mind at least.

No tattoo is truly original these days! Everyone has similar stuff, there will be slight variations but I guarantee that nobody nowadays has a "one off" tattoo that no one else has.