Even with the "happy or not" qualifier, I'm not so sure it's a feeling of being "locked in."
For me, it's being stoked that my Apple iPhone, iPad, Watch, laptop and desktop work so well together in a seamless manner. iMessage, notifications, continuity, handoff, Music, ApplePay, etc working across all devices is a huge plus. It's something I depend on everyday. It's even the little stuff like my Watch automatically unlocking my iMac.
Some might call that "lock in," I call it outstanding integration, synergy and user experience, that fosters productivity/creativity. I would only feel locked in if other competing platforms had better better overall integrated user experiences, and leaving Apple would be much too difficult. So far I haven't seen that.
You should try experiencing that feeling of your's when you only have PowerPC Macs and one Intel Mac limited to Snow Leopard max.
There is no "lock in" when running Leopard 10.5.8. In fact, there's no service integration at all!
App store? iTunes sync? iMessage? Hand off? Forget it!
This is where Google services is my friend. I don't experience lock in at all, but neither do I feel as if I'm missing anything either.