I do think we can have a civil discussion on when it's "right" to use deadly force in a home burglary. Given, Texas has their own, separate law for property protection and should be discussed in a different conversation. However, the discussion of home burglary would still apply. We also know that every state has their own interpretation but I feel that the use of deadly force for fear of one's life would hold up in any state.
So, the discussion seems to be around if someone is in your home and you are present, whether you were there all along or walked in, can you use deadly force for that reason alone?
IMO, once you determine that the person is there for reason of theft or vandalism and is not there "on accident" then you have every right to fear for your life even if there is no weapon present or visible.
You don't know who this person is. You don't know if they have a hidden weapon, you don't know if there are more outside standing watch. You don't know if they will suddenly grab something close by and use it as a weapon. You don't know their hand-to-hand skills in overcoming you or disarming you. If you think it's like in the movies where someone freezes because you yell "freeze" then you are gullible.
If there is a stranger in my home who is not a neighbor stumbling around asking where the toilet is or someone you know, you have the right to shoot them then and there unless they turn to leave upon seeing you.
I'm sure there are many noble people here who want to rehabilitate the criminal versus shooting them where they stand. You don't know who you are dealing with and what they are capable of. If they have two strikes against them, this could put them away for a long time. They may have killed someone 20 minutes before and now feel they have nothing more to lose. They may be caught by surprise and snap. Read up on the recent triple murder in CT if you don't think this can happen. You don't know and I will not feel sorry for any home invader who is shot while applying his craft. 14, 15 and 16 year old gang banger (any race, they all have gangs) wannabes are the scariest. The older members school them on how they'll go to kiddie court and get off in a few years with a badge of honor. I'd fear a 16 year old over someone with grey hair every day.
Keep in mind this isn't the same as baiting someone into a trap. That is murder, not self defense.