the floor goes on

Got up the carpet and the pad- the dirt under the pad was horrible. The carpet was gross. The bad news is that the floor itself seems to be rotted under the vinyl flooring next to the tub. The rest seems to be in good shape. So, now the question is: Do I ignore it? Do I cut it out and re build the floor? Do I have faith that the repairs that are visible as part of the basement ceiling are done well and that the tub won't fall through into my crafting or that I won't fall through into my crafting? I think the area under the tub is sturdy, it's just the wood floor in front of the tub at the corners that are yucky. Too many decisions. I need beer or wine or vodka and some brainless conversation. Off to find my favorite lushes.