I think it very much depends on the baby you get .....
Both of mine have been very grumpy babies, for different reasons. Cried a lot and then some more. Hated the car seat, pram, sling etc. refused to nap anywhere but their cot
DS1, from 2 has been the most delightful and easy child known to man - who knows what the tweens and teens will bring.
DS1 is almost 2 and hopefully coming out of his grumps and cheering up a little - hopefully he'll follow in the footsteps of ds1 but we'll see and deal with what comes.
Friends of mine had "easy" babies. Would nap anywhere, no weaning issues, enjoyed walks in the pram, would gaze around contentedly while their mum had a drink etc - then had a nightmare 2s and 3s. One friend would joke with me that at least when mine were at their worst they were immobile so I could pop them down and walk away for a minute - hers would charge to open water given half a chance and for a good few months we avoided a certain park where they were renowned for darting off!
As far as I'm concerned, every child will have challenging times that will test a parent. Combining that with every parent having a "favoured" age - some people love the baby stage, some hate it. Some love the demon toddler phase, some hate it.
It's great that you've found it easy so far. Long may it continue but, with respect, you're 6 months in - you've not hit weaning, sleep regressions, developing will, development frustrations, toddlerdom, infant independence, junior "I can fix the world" bravado etc - just like I've not encountered teens, adolescence, adult children yet!