Complete role reversal in 2 months.
a cynic could unfairly suggest you feel strength is only good when it doesn’t require work? 
My 2c would be I tried one order of creatine for a few months 10 years ago. Felt I had some improvement in 50-100m swim speed.
I haven’t seen much to suggest major endurance benefits, not enough to justify price when nowhere near maximising the simple things of training/sleep/diet.