I did have a shed.
I put too much in there, it got damp...things were living in there, I got rid of them.
Then got rid of the shed, for more gardens space, then found out I had no where? to put the Lawn Mower....and all the garden tools.That made me mad...so made room under the house, that still makes me mad because it's hard to get them out.
Now looking at getting a very thin garden shed....Just to hold the mowing gear etc.
I would lock it, just to make sure.