Bellini, of course you have every right to vote or not vote in whatever way you feel best for you, your family, constituency, the country as a whole and if those considerations do not all point to the same person then you choose where you draw that line.
I think you must be having a very hard time IRL as your posts have become a lot angrier. Sending some cheering flowers 
I don’t agree with you that this thread is full of Corbyn-worshippers. I can think of only a couple of posters like that. Many, many other are perhaps long term Labour supporters who are not happy with the leader but feel voting Labour is the least worst option, or whose priority is to get rid of a Tory MP, others might not be Labour leaning at all but are voting tactically.
It’s all very well wishing we had a different leaders for all parties/better options available - heck I do that a lot myself and frequently rant at my DH who voted for Corbyn - but the problem is that there are no perfect options and the election is happening regardless. On 13th December (or some time later if there is no majority) come what may we will have a new PM. At present it seems most likely that this will be Boris Johnson or Jeremy Corbyn.
As an NI person I don’t think Johnson’s deal has solved the problem there. IMO the Loyalist side will kick off as the reality of a border down the Irish Sea kicks in. I think the only Brexit that would be ok for NI (and the rest of the UK) is the type of soft Brexit that Labour are most likely to negotiate if they get in. Voters will then have the chance to vote for a specific Brexit if they so choose. Or with luck we can put this whole sorry debacle behind us and focus on addressing the issues that led to the Brexit vote in the first place - that is not going to happen under the conservatives. Under them we will be out on 31st Jan and no trade deal Brexit in a year (imagine the cuts that will be needed to deal with that financial crisis).
Sounds like you rely on the NHS too (my child has complex health and SEN needs so I’m terrified of what will happen to the NHS after Brexit/a US trade deal) - aren’t you worried about this too? Surely you can’t think the two options are as bad as each other on this?
I have recently joined Labour so I will get a vote in the next leadership election - there is definitely a deputy leadership election coming up and JC is quite old - he will need to hand over the reins at some point. Maybe that’s something to consider? I actually don’t mind most of the left leaning policies but they need a credible leader and someone who will take the anti semitism seriously. They desperately need to acknowledge and listen to the people who are saying this is a problem and then do something to tackle this without resorting to whataboutery. I also despair of the red Tory/Blairite narrative - Labour needs to be a broad church and to do something about the infighting.
Again, 
and hope we can all get through the next few weeks without too much grumpiness - these threads are amazing and it would be a huge shame if long standing posters felt their views were not welcome. Tensions are rising because there is so much at stake.
This took me ages to type on my wee phone keyboard so no doubt the thread has moved on a lot.