Is Model an end?

Creation of Universe is an example that fits the current discussion. The big bang model says that it started with an explosion, intelligent design points at a God like entity. These models can explain the current observable phenomena. Is it end of the analysis?

Or because we have multiple models to explain current situation, and we believe that there has to be only truth, we should dig deeper to eliminate models. That means we have to try to play with model and predict some other things beyond current observations. And look for inconsistencies with existing models. And then choose the best model and live with it till an observation invalidates it or a new model superior to it is proposed.

But if there were no models would u still do all this. Well, there is no need for all the applications of it, but to believe in it we would still like to dig deeper. Validate it for extreme situations that are of no immediate necessity. And one could say that understanding is an end, so model is not an end by itself. That is, models should be proposed, evolved, scrapped, recreated for the end goal of understanding.