ORAS
Is making a large investment with no possible return worth it?
Depends on how much you want that return and how much hope you may have. If you want something very badly, make the investment - it will always be worth the time spent. (The larger the investment and time spent, the less of a risk created.) If you don't think you can achieve the desired result, make the investment. Try, try, try.
However, if you honestly think the return is not worth the risk, or if the risk is highly unlikely and is not worth the repercussions, then maybe the investment is not worth it.
Always try, but be realistic. Things don't always work out in the end, but it never hurts to try.
Do the ends justify the means?