As Paul has humorously pointed out, lots of us get bitten by camera boredom from time to time and think that another camera would do something magical for our photography. After the honeymoon period wears off, though, you look at your negs and think "meh, so what's different?" and the new darling gets traded in for yet another brand/format which will do something magical for our photography.
After many decades of this I've finally determined that it's better to use what I have and simply do the discipline a bit differently. Just use a 50mm lens for a year, only shoot below knee level on the street for three months, shoot one lampost and whoever comes near it for 24 hours straight... I find that kind of thing usually renews my enthusiasm for photography in general and eases the pain of gear boredom.
You can buy a decade's-worth of film for the price of a Leica. Which would give you more satisfaction only you can decide.