I've had my Cuisinart DLC-8 for over 20 years and I use it almost every
day.

If you are good at knifework, you may well find that the processor
doesn't do what you do when you chop and slice. I, however, am bad at
knifework, and I am more than happy to let the machine grate my carrots,
slice my yellow peppers, cut shortening into flour for pie crust, whisk
mayonnaise...

As for cleaning, it goes in the dishwasher. No big deal. I have the
chopping blade, 3 slicing blades, and a grater. I never got interested
in the whole raft of oddball accessories.

It is _not_ good at incorporating air into mixtures, so I use the mixer
for egg whites and batters and mousses. I never tried mixing cookie
dough in the FP - I think that with a denser ingredient, its motion is
more chopping than mixing. On the other hand, I have often mixed yeast
dough in it, which was fine.

My partner uses a blender for many tasks where I would use the FP.
Different strokes.

Like any tool, if it does what you want, go for it. If not, try
something else.