I personally love the huge trackpads Apple builds. Especially the double tap right-click and all the swipe features. I think the dedicated button ones are super inconvenient, because you’d have to move your finger there instead of clicking/tapping anywhere

That's because trackpads are now used to control as you would on a phone/tablet : tap for single click, double tap for double-click, two-finger tap for right click, pinch to zoom, etc.

Ideally, there would still be buttons to allow both types of control though.

Talk about irritating. A laptop is not a phone/tablet. A laptop, even a tiny netbook, is big enough to allow the LUXURY of haptic feedback, so why not provide it?!

Apple's trackpads provide haptic feedback. If you push them gently, there is a soft click, if you push them more, there is a hard click.

An additional benefit over hard buttons is that applications can use it for additional feedback. E.g. OmniGraffle provides subtle haptic feedback via the trackpad when objects align, which I find extremely handy for quickly aligning objects.

I like distinct buttons. I like being able to tell by feel where my fingers are. I lose track of my finger's position on a big trackpad where the only clues to finger position are the edges of the pad. This leads to touch leakage: you go click but you touch halfway in the button area and half-way in the trackpad area and so the mouse pointer jumps as you click, thus clicking on the wrong thing. Talk about irritating!

My laptop has 2 sets of 3 physical buttons (HP zbook 15). Unfortunately it's got a number pad that puts the touchpad and the space bar out of center. I have to shift the whole laptop to the right and place the main windows on the left to have them where my eyes are. The only 15" laptop without that issue was a Mac but it comes with a top bar and a global menu which are worse issues IMHO.

It seems that most people but developers like and actually use number pads. I think I touched it ten times in 3 years, included checking that it worked.

My laptop has 2 physical buttons, but the lack of a middle mouse button irritates me. A huge amount of the web browsing I do involves opening links in new tabs with the middle mouse button.

I started doing it with ctrl-left click on laptops a long time ago...but it's an annoying switch if I've been using a desktop or an external mouse all day.

I really do love using my older thinkpad's keyboard. Especially the layout as Louis pointed out, is amazing.