For my money, automation virtually guarantees my growing environment will be on point, everything from temperature to light schedules. Battery backed up time of day etc…
I can then focus my attention on caring for the plants rather than the room.
Automation is not cheap but, in my experience, worth every cent.
The downside is that the system must be programmed. I am just finishing a system with two growing areas and two drying areas. The program has taken about 40 hrs so far and if you can’t figure out how to program it, a decent programmer will be very, very expensive (think $50 - $200 per hr, mostly around $125). Learning to program is fairly easy for some folks and really difficult for others.