The things that no longer interest you have helped make room for the things that do.

Abandoned interests look like wasted time, especially where money or years went into them. Taste narrows by trying, though, and finding out what you do not want is the only route anyone has to knowing what you do. The dropped hobby is part of how the current one got chosen.

When you clear out the evidence of an old enthusiasm, note what it told you about your own preferences before it goes. Then let it leave without an apology attached to it.