Low income lease

[Michael Johnson]

I have a 6 unit building with low income tenants. After a tenant's one year lease converts to month-to-month is there any incentive for the landlord to sign a new lease? I'm not seeing a benefit. My thought is that a tenant could leave without notice and my only recourse is to keep the deposit. I could sue the tenant, but for what? They have no assets. At least if they're on a month-to-month I only have to give them a 30 day notice if I want to bring in somebody new. I can also raise the rent when necessary and not have to wait a full year. Can someone disagree with me and explain why I should sign a new one year lease? Sorry if this is a no brainer, but I'm trying to understand the pros and cons. Thanks!

P.S. I'm in Colorado if that affects your answer.