I only have free Amex cards, On my primary I have $4038 in lifetime credits and on my secondary $3007. The last few years credits on my primary;
2024 - $233
2023 - $385
2022 - $190
2021 - $561
2020 - $140
2019 - $335
2018 - $510
2017 - $758
2016 - $630
So I won't be cancelling anytime soon.