Since I started driving in F1 in 2006-07, the cars have got slower and easier to drive.
In 2007, we had more downforce, the speed through corners was faster, the races were a series of sprints between fuel stops.
Now, it's still very physical, but for someone who trains a lot, like all the drivers do, it's nowhere near as demanding. We all say, "that race was easy", or "it's easy to drive the car now".
It's all relative, of course. You still have to be very fit - if a normal person got in the car, it would destroy them.
But while we're not as stretched physically, don't think we're not on the limit. Whatever I drive, I will push to the limit.
This year, I am pushed more in the technical sense, in terms of the need to understand the car and all the things to optimise it, but I am still on the edge of what's humanly possible.
As for the criticisms of the sound of the new engines, it is what it is.
Every year, things change. The V10s from the early 2000s sounded better than the V8s which F1 used from 2006-13. Then we got used to the V8s and now we have gone to the turbo. It still sounds good.
When I first came to an F1 race, the first thing I noticed was the noise vibrated my chest. I was 11 years old and it nearly burst my ear drums, and that excited me so much.
But people watching on TV don't get that - even if they have the very best sound system. You only get that at the track.
Now, they won't have that. But the races still look cool.
Some people will say they just want the loudest cars they can have, but we also have to think of the wider world and F1 is now at the forefront of developing great engines with lots of power but excellent fuel consumption.
What we have been able to achieve with these engines is incredible - we get the same power, if not more, out of a V6 than a V8 and use 30% less fuel. That's fantastic. And the new era of road cars will benefit.
F1 has always been about pushing technical boundaries, and that's what we're doing with these new engines.
Lewis Hamilton
http://www.lewishamilton.com/post/bbc-malaysia-gp/