I've wondered the same thing about the time being put in to being reinstated , and it is what is behind my deciding to get onto it straight away . But d o remember that although our situations are similar, the difference is that I completely trust my feelings about my hubbie and our marriage, and I'm nearly entirely convinced that it isn't The Truth (all that remains is that nagging fear in the back of my head that might not ever go away thanks to many years of considered biblical training brainwashing), so I know that I'm not willing to sacrifice my husband's security and my own sanity to please my family and get them to accept my phone calls again. (And that's all that will change if/when I'm reinstated; they won't suddenly love me again. They'll just angrily accept my contact with them because they have to, but they'll always resent what they consider my destructive influence upon the family.)
We are not in this life to make our parents happy. I think somebody has already pointed out to you that our happiness responsibilites are more towards our partners and children. Your dad should be the one trying to make you happy, and in this case it would involve him giving you the space you need to work out what you want to do with The Truth.
You have two things to work out, and in order to protect the feelings of your boyfriend, he's the one you should be focussing on. If at some other time in your life you decide to consider The Truth again and see if you want to make the effort to be reinstated, that door is not closed to you. Whether or not it will take more effort now or then might not really matter; since right now you don't actually want to be doing it, do you? Maybe if it's going to happen, it should only be because you really want to.
I fear that, as somebody who has grown up being taught what to believe and not to think about it too hard, we will be the ones to tip the scale on your decision whether to keep trying to get reinstated for now. Do write down that pros and cons list, compare them. Be ruthless in what you put in it, spare nothing. Then look at the two lists and go with your gut instinct on which is more attractive. Sorry honey but you have to make your own choices! We only get one go at this life, and we're all just going with what seems to make sense.
Also thanks for posting this here, it's given me the opportunity to clarify my own thoughts on it all!