I'm not talking about generally-accepted views like the ones you've suggested here. Obviously, there is no reason or obligation to defend these sorts of beliefs/views. The view you've asserted about Galatians 5:25, however, is not of this sort, I think. In fact, your view appears to defy the language of the verse pretty directly. And so, in this instance where what has been put forward is...unusual, it does require justification.
I didn't think I'd have to explicitly stipulate that unfounded opinion was unwanted. This goes without saying, it seems to me...