Like anything worthwhile, it takes effort to learn. There is nothing quite like the synchronicity of a perfect tango: when two bodies, two hearts, two minds, two souls move as one in perfect harmony with each other, with the music, with the floor, with the other couples ... ah, there is nothing quite like it! So, yes, it takes some effort, but it is well worth it!
Plus, since you can dance tango to any 4-count music (almost all rock and roll is 4-count; we’ve danced tango performances to Leonard Skynard, Tracy Chapman, etc.), it is really much more versatile than other dances (for instance, waltz has that particular 1-2-3 waltz rhythm which requires a particular music to dance to it). But tango can be danced to just about anything.
So, it’s going to take some effort, but it is definitely worth it!