I will never understand the need for a shit load of tabs for personal use. Work/school stuff, sure, but having tabs open for stuff "in case I need it later" is insane. Bookmark it.
I have vertical tabs, so I can see ~30 tabs clearly on one window. Long time non-visited tabs also use no resources. Bookmarking would just be one more click, moving the tab somewhere not easily visible.
My bookmarks are clearly visible and take only a single click to open. If you didn't have a ton of tabs just sitting there, maybe opening a new one wouldn't "move it somewhere not easily visible."
My bookmarks are on the same level as my address bar, I lose no space to this other than having a slightly shorter address bar, which is too long anyway.