In My Opinion... When I purchased this game (2011) the monsters were little more than a distraction to mining/exploration! I firmly believe the creator designed it like that. Back then there were separate PVP and survival games. Again IMO a far better method of dealing with the two different types of play.
If you want to play at combat, join the armed services. Today you can try desperately to avoid bullets and IEDs. I filled my combat quota during VietNam. Thank you NO!!!
I'll wager the vast majority of veterans today DO NOT want to play at combat. If they do there are countless games that rely entirely on conflict. They do not include MINE in their name!
Survival mode is literally cruising for a bruising on Easy/Normal/Hard. Stop complaining about it and do one of the following things:
1. Switch to creative or set difficulty to peaceful;
Creative mode isn't debug for checking if things work right, it's for crafting entire structures without need to dully strip mine beforehand. Mumbo Jumbo, Cubehamster and Grian have youtube channels about redstone engineering / slimeblock machine construction / architecture respectively, you should love it. Here is a video that you should definitely enjoy if you love mining so much: And this one is from the Cubehamster, the most militant one of the trio in trems of what he is engineering.
2. Install appropriate mods. There are whole throngs of people doing just that for fun, with appropriate modifications ready and waiting. Or just start a damn thread about what redstone machinery or complicated process of production of highly useful objects!
Oh, and just in case. I know we have no intermediate between peaceful and easy. I don't like that. Here's the thread: https://www.minecraftforum.net/forums/minecraft-java-edition/suggestions/3031242-intermediate-between-peaceful-and-easy
With the suggestions I added you wouldn't even needed peaceful mode to avoid the hassle of undead mobs, just lighting, beds, smite enchantments and garlic.
Neither of us made the suggestion to turn Minecraft into something like Ark Survival Evolved, where large animals can just randomly come and trample over your houses and ruin them. It doesn't matter if Notch is in charge or the current legal owner of the IP, this is not going to happen to Minecraft because it is not something a majority of fans are wanting, or the devs themselves.
Constant, I mean literally, constant combat is for Minecraft Dungeon players.
And AFAIK vampires are keeping to their own fortresses, so as long as you don't settle in a stupid spot you should be safe without need of garlic or smite.
The creator you speak of, Notch, sold the license for $2.5 billion, and in doing so, forfeited his vision of the game. They're taking it in new directions.
Mining can only go so far. You have to have a reason to keep mining. If you don't want combat, there is peaceful mode, or easy for if you still want the occasional enemy.
(I admit I sound rude here, but I don't intend to offend.)