I HATE my crawl space. It is just big enough that you should have no problem getting to stuff. However, it is just small enough the only thing that can easily get in there are the neighborhood cats and raccoons. I actually had one get in through a loose vent, find a space to crawl up the wall and get stuck in between my first and second floors resulting in me having to tear out a piece of cieling to get it out. Anytime I have to work in the crawl space it is an all day job and usually requires one in the crawl space and one up above. Once you are in sucks to get out so you'd rather belly crawl to the hole and ask for tools, parts, etc. then fight your way in and out. I constantly debate about digging it out and making a full basement. In my mind it is such a waste of space. It also provides a super cooling area for all the duct work and piping. It is the first house I have had with a crawl (have had slab and full before) and it is the first house that I have had frozen pipes.