I'm not dead keen on the edition cycle, but it has happened to suit me quite well.
I started with BECMI D&D. Just as I was hitting what I saw as the limits of that system, TSR released 2nd Edition. So, the timing was right for me.
Some years later, I had fallen out of love with, and then back in love with, D&D. I was just getting back to the game (from Vampire, FWIW) when 3e was announced. The timing was exactly right.
3e was a revelation to me. It was immediately obvious that this was the game I didn't know I always wanted. But, as time went on, the imperfections started to get to me.
And so, when 4e was announced, I was ready for a new edition. Yes, please!
Sadly, 4e just didn't grab me. And while Pathfinder is, on balance, an improvement over 3.5e, it isn't "better enough" to persuade me to throw away my accumulated system knowledge (although it's getting damn close...).
So, under those circumstances, another edition change just happens to suit me really well. I will welcome 5e... if and only if it is a good edition. (Natually, by my own entirely subjective assessment at the time!)
But I'm also tired of the Edition Wars. So, I won't be repeating the mistakes of the last few years. If 5e is good, then great, but if it doesn't grab me, I'm afraid I'm done - I won't bother waiting for any eventual 6e.