well kazal, i can certainly sympathise about the black mould - we had the same problem in our bathroom.
It didn't matter how much I cleaned, it always looked like I hadn't bothered!
We retiled and scooped out the sealent and re-did it all. We couldn't afford a new bathroom suite but we did invest in a rechargable, portable dehumidifier, and that seems to be helping.
I like a shower over the barth because I find, in a cubicle, it's difficult to get away from the water - do you know what I mean? I like to condition my hair and leave it on a while and it's hard to not rinse it in a cubicle!
Also, with children, they like to hjave a bath, or even shower together (The little ones obviously!)
And of course you have use of a bath when you need it.
You can't beat a long soak if you have a bad back, or sprained muscle etc.
Oh yeah, and it's handy when it comes to soaking things - nets and that!
You can get some really nice shower curtains now. Why not get a really funky one to brighten the room?
x