There are no set strength or endurance goals that fit everybody. Reasonable strength goals for general fitness - not for great power - vary by body type, neuro-muscular constitution, age, sex, talent, etc.
I know a gal, much younger than me, who can deadlift 300 comfortably. She is a school teacher.
My trainer and I, after 18 months, have decided that realistic goals for me are to bench my body weight (which is 165 lbs now - up ten lbs of muscle and sinew in the past 8 months as my boss predicted and required, while my waist is down to where it was 15 years ago - from 37" to 35"), barbell squat my body weight a few times, deadlift 200 a few times, and do maybe 5 pull-ups. Have you done a pull-up lately? I remember when I could do ten or more. Never again, for certain. I can not do military press, alas, due to shoulder damage.
That is realistic, not ambitious and I am certain many readers are much stronger. After reaching those strength goals, it will be mostly about maintaining, preventing decay and deterioration. Sure, I'd like to be stronger, but I wouldn't mind being taller, more handsome, and smarter too. Regarding endurance goals - that's a different topic.
So yes, those are relatively modest goals for many but I have an ectomorphic runner's build, some grey hair, and I am about fitness and conditioning anyway, not body-building.
How are our friends doing with their efforts? Do you have goals? Goals are necessary in every endeavor, I feel.