I tend to agree with the posts that discourage brick breaking, for all of the warnings given; however, if this is what sustains your interest, then maybe it is best to stay with it and hope the enthusiasm spills over onto other things.
<font face="Verdana, Arial" size="2">Yang she Taijiquan is a fighting art with serious da fa (i.e striking methods)</font>
I agree with this; however, I would say that the Association's Taijiquan does not emphasize striking methods and I believe this emphasis is deliberate. In my view, we emphasize the study and understanding of energy ("Jin"), which has no fixed shape or form.
<font face="Verdana, Arial" size="2">Tui shou with out da fa and you have nothing!</font>
As far as I understand it, the Association views Tui Shou ("Push Hands") as a bridge between the solo form and free fighting. It is a continuum. At one end, the emphasis is not too dissimilar from the solo form; but at the other, the usage will be practically the same as with free fighting. If you are practicing Push Hands applications, you will often be dealing with applications that can do every bit of damage as the typical strike, or even more, if your knowledge is sufficient. Simulating such damage is, however, not the focus, but rather listening, understanding, control and neutralization skills.