It is not for everyone, but yes you won't find to many Cons being enumerated by this forum group. However get training. THEY ARE DIFFERENT. I outline a recent case below, where a pilot such of yourself with only Piper and Cessna time (all fixed gear, fixed prop, less than 180 HP), jumped into his newly purchased experimental (Zenith) plane and crashed on his first flight. Fortunately not hurt.
https://vansairforce.net/community/showthread.php?t=200375
Get transition training. These planes are a delight to fly, but have more power to weight ratio, less drag. The controls are very light and responsive. Since it is not certified Part 23 they are not as "stable". Stability is great but takes away some of the responsiveness. When I say not as stable I don't mean unsafe, I mean stable to the Part 23 standards which are very specific.
Maintenance - If you build a plane you can work on it and maintain it and do the annuals (called condition inspections on EAB's). Even certified planes allow pilots to do basic maintenance, but you have more freedom with EAB's in part due to not needing STC parts or having a TYPE CERTIFICATE configuration. That does not mean you can go wild. ANY major modification (look up the term) requires you go to FAA and jump through hoops, including Phase 1 flight test as if it is almost a new plane.
Experimental planes in my opinion need an engaged pilot/owner willing to do some work, not the least is taking it apart slightly and inspecting it from time to time. Since each EAB is slightly different it is good you become familiar with every aspect of it. Even if you hire an A&P you need to tell them how the plane is wired, plumbed since it may be different than a Cessna or Piper they know. Finding an A&P who knows RV's may be not easy, so you need to be the expert in your plane. It is not a basic Cessna or Piper like they have seen 1000's of times. If a person can't change a car tire or put windshield fluid in plane ownership is not for them. Rent. Since you can't rent EAB's they would not be in the picture.
THERE ARE LIMITS to experimental or EAB planes. No flying for hire or renting. Can't fly over congested areas unless taking off and landing. This latter limit I think is hard to regulate and often not rigorously adhered to. Most of the time you are not flying over LA transiting the areas, but if you were (not taking off and landing) thou shall avoid it. There are plenty of wide open spaces. To get around the letter of the Reg one could simply do a T/G landing. This is mostly a technical limit.
Training and Commercial or For Higher Uses - Getting training in your own RV you need to jump through hoops I won't get into now, but the HOOP is paper work and permission from FAA. You can not do commercial uses, rental, flight training for hire*, charters, sight seeing, pipe line patrol, fish spotting... in EAB's. (* convoluted topic currently in flux)
The big news you have a plane that can take off and land in shorter distances, climb 2 or 3 times that of a typical GA plane, go twice as fast with stall speeds slower than a C152 and do aerobatics easily with delightful control feel and visibility. It is a great cross country plane with two people, bags and fuel (now 4 ppl with RV-10). The bad news is used prices on RV's like everything has skyrocketed. You could get a nice RV for $60,000 is now double or tripled. I saw RV10 for $350,000. I remember RV10's just 10 yrs ago sold for $125,000. RV's do hold their value but current prices are nuts. If you want a bargain, a RV4 or may be an RV6 with lower HP, fixed pitch prop and basic analog gauges, no pretty paint or interior may be $40,000. Here is a secret, they still fly amazing and make a Cessna or Piper look doggy.
Last is insurance. There may be a factor there. If it is a tailwheel plane and you are no TW time pilot that may play into it as well.