There’s no point in opening your statement with “Out of respect” as an indication that you deliberately decided not to pursue a certain course. If you say it, you signal that you don’t want to keep the fact from them that there is a reason for disrespect in your mind. So while it is less deceptive/secretive/closed and more sincere and open, it also implies disrespect and a closed mind, already considering its own standpoint final. The openness of this choice of words can come from a feeling of superiority, which itself can work as an insult.
It’s somewhat similiar to saying “I could call you names, but…” or “Some people might say that you…”.
As a sidenote: It also reminds me of the somewhat related issue of “No pun intended”. I love puns, so when people keep saying this, it would piss me off if they weren’t the ones dissing themselves by openly showing their fear of not appearing in the proper light. It basically means you want to suck up to an uptight crowd, but at the same time be fun. You want to have it both ways, all the benefits with none of the drawbacks, but you really gain none.
For further details on that matter I can simply refer to this very good essay, a favorite of mine because it covers the topic thoroughly:
Fruitful communication often needs to work both ways. But I sometimes notice a phenomenon in interactions with people, actually not just limited to communication, but also cooperation, where they feel the need to establish a master-slave role distribution (meaning one-directional – one sender and one receiver). This would mean for example that as soon as you do an inquiry (asking a question), it will become difficult to make the other person accept a message from you. They, not in good control of their ego, probably due to a frequent habit of using it in order to achieve success in our society, will begin to assume the role of the ‘wiser’, the ‘superior’.
The same can happen when seeking someone out for help. Personally I had this a lot where I eventually realized they are more in need for my help than the other way round, and that we could actually help each other due to this, but at that point they already were in a mindset that they were supposed to provide a service, thus seeing me as an inferior.
I want to again remind you that ideally we are all teacher and student at the same time.
This requires that when someone comes to you for any kind of help, you accept it as a new life experience, by being open and perceptive to what’s in it for you. Everything that happens in your life can start having a meaning/purpose if you allow it. This raises the value of your experience in this life and thus appreciation for it, and in turn the people involved. This can help cultivating humility, empathy and serenity.
The less you live the student role through the course of your life, the higher the need for that that may arise, and vice versa.
Remember, health comes from balance. You can be at your best (while maximizing other people’s chances to be, too) when everything is present in just the right amount.