Hi! I've been playing Skyblock for a few weeks now, and I really love it. I have gotten a few friends on board but they all have made the same comment. I kind of agree with it, as well, 'This feels like Creative with more steps.'
When you fall, you don't lose your exp or items, so there's no reason to try to stay on the island. The mobs don't attack, so there's no reason to light up your base and protect yourself with armor. Food is free with /kit food so there's no reason to grow anything for hunger.
Ideally, I think the enjoyment in Skyblock is the creative aspect and the unique way you would have to survive in such a circumstances.
If I am the only one who feels this way, please ignore me.