The shock is a bit like medical shock, and leaves you tired, disorientated, feeling sick and faint. You need to be kind to yourself today, try to eat and catch up on some sleep. Minimise all non-essential activity, and recognise that you are in crisis.
It's totally normal to not know what you want. Getting him out of the house to give you the time and space to think about whether there are circumstances under which you would consider a reconciliation could be a very good move. You do not need to make a final decision now. Only you, in light of the state of your marriage previously and what he has done now, can decide if you want to attempt to reconcile; and you need every bit as much strength to choose to mend a marriage as you do to end it. But that decision really should not be made in the hours, days or even immediate weeks after discovery.
It's really hard, but keep you dignity - just be aloof and stick to the practicalities when he returns to get his things. Because having him out of the way so you can think, and having him in no doubt that he stands to lose you might just get him to think, gets both of you into a state where you can really think about choices and what they mean for the longer term.
I wish you strength for the coming days, but expect you will find yourself stronger than you think. Unless he is truly repentant, there will indeed be no future; and unless he is prepared to make an enormous effort to win you back, it won't happen. He is the flawed person; you are the one who gets to decide if he can ever again be good enough for you.