I know that there are about 50 pages of responses to this; but I want to point out that this is not paying 200M per hour, and it is fun.
I have estimated what I am getting, it is closer to 30-40M/hour. So, yes, I am definitely making credits faster than bulk cargo trading, which, after doing that for about a year, has gotten a bit old anyways. Second, to fill my python I am going to about six different ports for passengers, ferrying passengers between them as I do so. The result is that I am doling quite a bit of load balancing. Then there are the constant interdiction on that long super-cruise.
Over all, I am enjoying these hauls. Yes, the fact that they pay enough that I am able to do what I want is also an improvement. Frankly, the constant picking up pennies when hauling cargo was getting a bit old. As it was, the only way to make reasonable credits in this game was to fly as a shooter of some sort. I prefer to take a more pacifist approach.
So, yes, being able to see a fair payout, compared to other things I have done, is an attraction. The payout allows me to do and try things that I could not otherwise do. Add to that, the process of getting the passengers (from several different stations) creates a bit of load balancing complexity. Overall, I am enjoying the Smeaton run; eliminating it would detract from the game for me.
Having a healthy credit reserve allows me to enjoy those very things. Not having a cash reserve left me not doing those things because every action left me worried about the payout from everything I did. Those burning station rescue missions didn't really pay much; as such, I stopped doing them to get back to the credit grind. But now that I have discovered a way to build up a reserve quickly, I am taking part in many more of these, low pay-out but fun, activities in the game.
Having enough credits adds to the game for me.