Much thanks to everyone for responding to my questions in my short time here. I was interested in LE because I wanted a free automated solution for data security against my online store. After much thought and consideration, I realize that manually renewing my SSL every 90 days is a security risk because there is a dependency on me and I don't consider myself to be reliable long-term to maintain this. Eventually, something more important will come up and there is always that small chance it could.
You might say, "well, it's only every 3 months" or "you can do it in no time". Although that is true, I believe relying on myself for this task is risky. I could solve this for a few bux a month. Additionally, I do very much trust Let's Encrypt to install and renew it from my machine. The only problem is I am not willing to trust myself to take on this responsibility nor am I interesting in repeating this process every 90 days. I believe the after-90 day expiration assumes that the user will make it a high priority, and there is no reason why the user shouldn't. At least, that is how I feel. I would like to revisit Let's Encrypt when 1 year renewals are allowed because this is more attractive to me. I want to focus on one thing and managing my SSL was never part of the plan.
Thanks so much for your help and I would love to hear your thoughts.