Everyone does what works for them.
We have done EVERY kind of floor. LOL
We did one season (over winter) of deep litter as we had no choice- RAINS actually 9 months of rain... we got it partially cleaned but literally not a full out clean till the rains ended..
Personally I DETEST deep litter method.
Basically you have poop and pee mixed in decomposing and you just keep throwing more on top. That is why people don't clean it out for 1-3 years... it is awful once you finally due.
You also have to make sure the ceiling is VERY high- as that 7 ft clearance will shrink to 6 ft then 5 ft easily in deep litter.
If you don't have a tractor to clean it out you can forget it.

One it is HEAVY. TWO the stench is unbearable as you get deeper and deeper.

Depending on the size it takes forever!
In my experience I see alot more respiratory issues & mite issues in deep litter. I do farm management consults so it is more of what I see on others farms. I also suspect farms with a good deal of mastitis issues is from the deep litter method.
I use a method that we have implemented this year after our friend came out and we had visited some dairies...
Its base is dirt, we picked a higher ground to put our newer temporary barn on. Then we have 6 inches of packed rockdust over top. The rockdust crushes down and looks like dirt but is actually fine rock (here it isn't actually called rock dust it is Chapel Hill Grit- local for our quarries) several people here changed over to it and so far all the friends we have local that have goats have done the same thing... once packed it is easy to sweep or rake the berries off the top... urine goes straight down through and no odor. For winter we do throw cheap hay (not straw) down for them to bed into. We replace that every few days... we don't cover the whole floor. Because it floods so much here we use it in lots of other areas where we need more drainage.
Barns stays immaculately clean.

The downside for us in NC is rainy season! The spent hay goes on the ground and if we can't get to the barn for clean out it gets gunky.. We normally do not feed hay in the barn. We have a hay feeder outside, they are given a certain amount each day and the rest of the day they forage... winter we give more hay in the evening.
This works for us.

I have some pics if you want to see.
Trying different things and changing what you do over time is
very normal by the way.

When we had 2-3 goats things were very different... as our herd grew and grew and then needing kidding stalls, kid paddocks etc... much has changed. Add milkroom and treatment areas ... well it is ever changing.
Some things work for some people that don't work for others.
There really isn't a "one-way" fits all.
Shoot- I am doing drawings of my new barn- you know my dream barn for when we move... who knows if it will ever get off a page of paper.

Like I said my...
dream barn
