Profit will always be going down for a certain bitcoin price, as difficulty will obviously have a tendency to go up over time. It is your call to invest or not, nobody was forced to. And in my opinion it is really worth it if you have cheap or free electricity.
Sure, you are not forcing anybody to buy it, you are just liying posting these photos of 34 euros profit per day
and it's still down down down (13 euros today)