Broken saves are the absolute norm for in-development games, friend. Most updates for all AVNs break old saves. If you're that upset by it, either stick to final releases only, or find another form of entertainment altogether.
If the decisions are so problematic for you, just use a walkthrough mod, which will highlight the best decisions. You should also be able to right-click the skip button to instantaneously jump straight to the next choice, which lets you get to the latest content in less than a minute.