Newly built single-family house approx. 170m² city villa

Moreover, one should also consider the garage size, etc. Is it even possible to properly open the car doors and get from the trunk to the "wichtigen" utility room door without scratching anything if you are carrying a crate of beer? In some garages, I really doubt that. Otherwise, everything has been said here.

Especially for groceries, it is very convenient not to have to carry and drag them 40-50 meters through the whole house.

A house in which refraining from a connecting door would result in a detour of forty meters would, firstly, be designed so generously that one could still fit the one from inside it, and secondly, would be misplanned not just by a decimal place.

Build not for your friends, build for yourself.

The first house is for an enemy, the second for a friend, and only the third for oneself: the connecting door would therefore be in the second for me

Three friends have a direct passage from the garage to the utility room and would never give it up.

In my circle of friends, the intersection of people who are happy and those who have a drive-in pantry is exactly zero.

As an adjoining room, we have a pantry. I also wouldn’t store food in the utility room.

Not only the Fritzbox hangs in the adjoining room, and I consider a heating system more damaging to aromas than an occasional spray cloud of starch wafting through the air while ironing. That vacuum cleaner bags are stored next to it does not harm the pasta.

OK, I completely agree with the food storage in the utility room. I wanted to store drinks in the garage anyway, but other food items are not well placed near the heating. I had an alternative floor plan created based on my original ideas. Now I’m even more torn.
I also presented the terrain modeling in 3D. Not pretty, but I think the cut into the terrain and the slopes around it are quite good.

Access to the house is not the be-all and end-all for me, but if it can be realized, I would do it.

The point here is that builders have seen this door somewhere and thought it was good, then try to plan a house around this oracle. Without giving much thought to whether it is really necessary and if something else might suffer because of it.

And hand on heart:

I am also glad about the side entrance to the pantry. Especially for groceries, it is very convenient not to have to carry them 40-50 meters and drag them through the whole house. I really don't understand the disadvantages so directly.

Are you the one who carries several shopping bags into the house after shopping? With kids and all, of course? That almost only works in theory, with very few big exceptions.
The "through the whole house" thing is not caused by the (non-)existent door, but by the house planning itself.

I once had an alternative floor plan made with my original ideas. Now I am even more conflicted.

Washing is done in the utility room? I give up... I also don't see a problem with the terrain gradient to have it properly planned right away. Why don't you just do without the hallway?

Are you the one who carries several shopping bags into the house after shopping? With kids and all, of course? Because that almost only works in theory, that is, in very few big exceptions. The "through the whole house" is not due to the (non-)existent door, but the house layout itself.

Yes. Do you really let that happen?

Well, my kitchen is located at the back of the house with access to the terrace. I didn’t want to place the kitchen to the left of the front door. That’s how the long path comes about.