You're confusing burn marks on meat with searing. I don't want any burn marks from the grates on my meat.
Neither do I, but the grates have two sides. One side is grates up, the other side is flat for even searing and won't make marks.
I still can't wrap my head around cooking for hours then searing when all I do is the same searing and it's done (sometimes over done.) Most of the pictures or videos I see I am always wondering why they are saying they seared the meat when they barely turned the color from before the sear.
Less than 3 minutes and I have a delicious perfectly cooked steak. I don't know why I would want to add several hours to that, nor how I would not overcook by taking it to temperature, then sear it for 3 minutes.
The difference with sous vide is not time -- it's
uniform doneness from edge to edge. When I cook steak at 133F, the meat 0.01 mm from the sear is perfectly medium rare. And it's that way all the way to, and including, the center.
DW broiled a filet last night and it was overcooked on the outside and raw in the middle.
I also think sous vide delivers better taste because the meat is cooking in it's own juices internally, but I haven't done enough scientific research to confirm that. (I'm used to my DW's tasteless filets from Trader Joes, and those are not a fair comparison with the taste of NY Strip).
Another benefit of sous vide is that you can't overcook anything. You set the temp, and it can't go any higher.
Sous vide cooking is also not hours of drudgery. You set it and forget it until time is up. And if you're busy when time expires, no big deal. Take it off when you are ready; it won't overcook.
Sous vide is certainly not for everything. You can theoretically cook just about anything sous vide, but why would you? I haven't tried cooking veggies sous vide because I see no sense to it. And, as discussed above, I didn't like the way my scallops came out -- I'll just pan sear them in the future.
Sous vide is just one option.