Since I’d gone this far, I might as well turn around and keep on going. 是什么意思？

Since I’d gone this far, I might as well turn around and keep on going。

翻译为：

既然我已经走了这么远了，我还是转身继续走下去的好。

might as well ： 还是。。。。。的好

我已经走了这么远了，我是回头好呢还是继续走下去的好？

既然我来了这么远，我还是到处转转，继续走下去的好。

自从我去这么远，我也可能转身继续去。