you just got very unlucky, very very unlucky, it will be different next time im sure, next time it will be something like manhunting hares that do you in (yes, there are manhunting hares, and there not the craziest thing ingame)
if you haven't done so already check out the mods section of the forum, theres lots of very fun mods in there some of which are almost essential (depending on your playstyle)
also, there is a speed up button in game if you don't want to go along at minimum speed
for some fun id get EDB prep carefully and go with my tried and true start of 3 colonists each having 2 specialties: research-growing, medicine-social, and mining-construction with all 3 having some interest in shooting, melee, mining, construction, and growing, skip the silver and instead pack extra steel and survival meals plus components, live fido behind and use a megaspider or 2 for the "pets" (they seem to have gotten weaker in b19 but there still a nasty surprise for unwelcome guests) chain shotguns are good weps, 12,500 points are about avg for randomly generated pawns and a good limit to use to have (mostly) balanced pawns
not sure what you mean by "i have all floors smooth and lights in all rooms", as far as i know that doesn't effect the chance of an infestation, just makes the place more beautiful and lets your pawns move and work at full speed, any base thats built under a mountain, even one tile will still have to worry about bugs
give rimworld another try or 4, its a lot more fun then you might think (also a lot more insane at times)
if you haven't done so already check out the mods section of the forum, theres lots of very fun mods in there some of which are almost essential (depending on your playstyle)
also, there is a speed up button in game if you don't want to go along at minimum speed
for some fun id get EDB prep carefully and go with my tried and true start of 3 colonists each having 2 specialties: research-growing, medicine-social, and mining-construction with all 3 having some interest in shooting, melee, mining, construction, and growing, skip the silver and instead pack extra steel and survival meals plus components, live fido behind and use a megaspider or 2 for the "pets" (they seem to have gotten weaker in b19 but there still a nasty surprise for unwelcome guests) chain shotguns are good weps, 12,500 points are about avg for randomly generated pawns and a good limit to use to have (mostly) balanced pawns
not sure what you mean by "i have all floors smooth and lights in all rooms", as far as i know that doesn't effect the chance of an infestation, just makes the place more beautiful and lets your pawns move and work at full speed, any base thats built under a mountain, even one tile will still have to worry about bugs
give rimworld another try or 4, its a lot more fun then you might think (also a lot more insane at times)