Yes, it is entirely normal to not want to reconnect with a friendly ex-colleague after a year of silence, especially if you feel that you have grown apart. People naturally evolve and change over time, and it's common for relationships, even friendships, to fade or become less relevant as life circumstances change.
It's essential to listen to your feelings and intuition in such situations. If you don't feel the same connection or interest in rekindling the friendship, it's okay to be honest with yourself and with the other person. It's better to be upfront and respectful about your feelings rather than forcing yourself into a situation that doesn't feel right.
You can decline without causing offense by expressing your genuine feelings in a polite and considerate manner. You might say something like:
"I appreciate your reaching out, and it's kind of you to want to reconnect. However, I feel that we've grown apart over the past year, and I believe it's best to cherish the memories we had but not force the friendship now. I wish you all the best."
Remember that it's perfectly okay to prioritize your own well-being and emotional comfort. Letting go of a connection that no longer serves you doesn't mean you are being rude or insensitive; it's simply a part of life's natural changes and growth. Be gentle with yourself and allow yourself to move forward in a way that feels right for you.