Karel, I am so sorry about your condition and my heart breaks for you that you are having to face such a hearbreaking decision.
I do not think any one of us could tell you what to do or to be honest even know what any one of us would do in the exact same situation.
I believe that you need to do what feels right for you. Only you can weigh out the benefits and costs of the extended lifespan. I am certain that your family wants you with them for as long as they can have you but you need to do the right thing by yourself.
I personally am as stubborn as they get and would give everything and anything a go before making a decision. But I also know how much Chemo can take out off you... I just spent all off past 2 weeks (since my last chemo) slumped on a sofa as attempting to walk more than 15 steps would have me collapse and force me to crawl back on all fours. I really do get how frustrating, disheartening and debilitating chemo sideeffects are.
Again, nobody can tell you what you should do... If I was to make such a decision I would speak to the Oncologist to understand exactly what the sideffects of living with such Chemo are and how much effect it would have on me in terms of giving me extra time. And then I would consider that and what would make me feel 'right'. I am not sure how to word what I am thinking beacuse as I type it all sounds wrong ??
I guess what I am trying to say is that when I go (regardless of when that is age wise) I want to be at peace - as in not having regrets about my life - about the decisions I made as I do not want to be thinking "what if..." or "had I only..." or "I wish I had...". I do not want to feel I settled or had sometjing imposed on me.
I am not sure if this helps or just confuses things. I hope I am not offending you at least as it is so hard to find the right words to express the actual thoughts and feelings.
I trully feel for you and wish you all the best and a lot of strength to make the right decision for yourself. Give yourself time to understand what will make you the happiest and most content in yourself so there are no regrets and that you are.content and you know you have done right by yourself.
Sending you a virtual hug ??????????????????
Jel.