I started when I was 42, I've been lifting for 5 years.
My first goal was to just keep at it for 1 month, and then re-evaluate.
At a month, I made my next goal to be 6 months. At 6 months, I figured I'd go for 1 year. Here it is at the end of year 5, and I can't imagine quitting. It is just a part of me now.
1) I started as a fatty. 6 foot tall, 270 lbs. High blood pressure 190/95, high fasting blood sugar 110 mg/dL, high lipids, and obviously overweight (obese). I had "failed" these three tests, and was told to come back to the doctors off in 1 month to re-test. Assuming I'd fail again in 30 days, they were going to start BP and high blood sugar meds. The health markers improved dramatically the first 6 months. Blood pressure normal, fasting glucose is still borderline high, but regularly under 100, and lipids are "normal."
2) The weight came off pretty quickly. I hit about 230 after about 9 months. I'm still overweight, and struggle with diet go get down to 220. I've done it a couple of times, but I seem to hover between 230 and 240 without thinking about it. BF, no idea. Probably high 20%.
3) At 5 years, I'm rather disappointed with my physique. I've tried some different programs, 5x5, max strength, lower weights, etc. I don't like to program hop, but I do alternate between high weight/low reps, and lower weight, higher reps after a couple of months. I try to take a week or two off every 5 or 6 seeks. You'd think that regular trips to the gym (3-4 hours per week), no more than 1 hour of lifting per session, for 5 years would have me happily buff. No such luck. Diet is obviously a huge part. I've tried some different stuff: LCHF, LFHC, paleo, keto, fasting. But hey, I'm still working on it. I've never missed more than 3 weeks training in a row. Typically associated with travel, sickness or injury.
4) I'm pretty happy with strength gains. I'm far from the strongest guy in the gym, but that's not why I go. Here are some basic numbers for me:
5 years ago, best weight: bench: 155 lbs X 10 reps, squat: 135X10 reps, deadlift: 135X10 reps, chinups: 0, body weight dips: 0, overhead press: 65X10
Today (no gear): bench: 235X6, squat: 375x6, deadlift: 375x6, chinups: 8, dips: 12, overhead press: 135x4 Overall, nice gains but I'm probably not enough of a "natural" to want to compete in power lifting. I tend to loose a little strength as my body weight goes down (but the relative strength stuff shoot up -- chins, dips, etc.). I don't have someone to workout with, so max efforts are rare -- if ever.
I could not be happier about health markers. I have friends and colleagues, my age that have: started blood pressure medication, started metaformin for type 2 diabetes, have bouts with gout (uric acid crystal buildup in joints). I'm pretty sure I would be there now, if I had not started lifting 5 years ago.
I suspect my hearing is a little worse than it should be -- too much music in the gym. Probably a good trade off.
I'm mixed in more and more aeorbic and HIIT stuff: sprints, biking, swimming, mile runs for time, etc. Just to try different stuff.
Future for me -- keep lifting, but concentrate more on diet. I'll probably just have to knuckle down, keep track of calories and macros for a couple of months, and dial it in.