Who do you think should be blamed for making the fourth indiana jones picture?

i agree indy 4 was not as good as the first three films but then how can you expect it to be how can you expect harrison ford do some of the physical suff which he has done on the previous first three films at his age and yeah maybe indiana jones 4 wasnt a great picture but it was still enjoyable. i also cant understand is why do some of the indiana jones fans who didnt like the fourth picture keep asking steven spielberg for another indiana jones he didnt wanted to do another indiana jones picture after he finished the last crusade so he only gave you what you wanted and so maybe it wasnt great but then you were the ones who asked for another indiana jones picture to be made