Do l get another cat/s ?

Hi. I lost my 19yr old cat back in March. In 30 years we have always had cats. I broke my heart when our neighbour kindly took her to the vets. We couldn't deal with it. Her ashes are back , buried in our garden with our other cats. We said NO MORE...we were so so sad. However after going into a cat charity shop the other day we saw photos of cats desperately needing homes. Oh dear. Tomorrow we are going to the cat sanctuary to look. I love cats so much but the hurt took a long time to get over. We are both retired (late 50s) and live in the country and not near a main road. Can l love another little pussycat? Not kittens...would adopt an older cat. I am so scared of it getting lost or whatever...obviously l would keep it in i initially...
In the last year both our mums have died and my best mate. Maybe we need something to bring joy into our homes? Perhaps l am answering my own question!! Thankyou for reading xxx