A few years ago I lost a dog to lymphoma. I did choose to do chemotherapy with her (she was 13 at the time) and I would do it again in a heartbeat. In dogs, the goal of chemotherapy is NOT to "cure" cancer but to buy as much time as you can with remission. That means that veterinary oncologists err on the side of minimizing side effects as much as possible and chemo is not as much of an ordeal for dogs as it is for people. In people, doctors are usually going for a cure, so doses of drugs are higher and side effects are much worse.
Personally my dog did not experience any bad side effects from the chemo, although she happened to have a strain of lymphoma that was very aggressive and not very responsive to the chemo so she didn't achieve the length of remission that most dogs do. Not trying to push you into something you're uncomfortable with, just giving you another perspective.
ETA: This is her the night after her first chemo treatment, feeling perfectly happy.
Personally my dog did not experience any bad side effects from the chemo, although she happened to have a strain of lymphoma that was very aggressive and not very responsive to the chemo so she didn't achieve the length of remission that most dogs do. Not trying to push you into something you're uncomfortable with, just giving you another perspective.
ETA: This is her the night after her first chemo treatment, feeling perfectly happy.
