We all need support as we age, there is no shame in that. If you are experiencing erectile dysfunction (ED) and haven't spoken to your GP about it please stop what you are doing and make an appointment. The causes of ED can be physical, psychological or biomedical. Get checked.
If you have the okay from your GP and know that your ED is not a health issue, then you could very well enjoy a cock ring (as will your lover).
Make sure you follow the instructions on how to wear it and be mindful that a ring works similar to a tourniquet, so look after your goods!
If your penis feels uncomfortable then take it off (the ring, not your penis). :p
PS Cock rings are not bling to be worn at a nudist beach.