I've had a 2016 XC90 T6, now a T8, and also a Tesla Model S 85 and P85D so can write from some first hand experience here. Style-wise I think the XC exterior is a culmination of classic SUV design that started with the first-gen BMW X5 ie boxy and sporty -- so I like it and can't imagine the design getting too much better for this theme. Interior-wise, the XC has further pushed the level of design harmony with its use of multiple types and layers of quality materials in a tasteful, modern way that few can argue against.
The Model X is... different. It's exterior design is compromised by the need to optimize aerodynamics to increase energy eficiency ie these are just variations on a Prius type of profile (even the Model S). It's interior design is minimalist, clean, futuristic, imo. Just as in the post above, styling is completely subjective (yes, we can all agree on some things that are ugly or beautiful), but this is how I would describe Tesla styling in its first generation of independent design. The front and rear look cool to me, the side profile is... lacking (and a reason I did not initially buy an X). I would only recommend that Tesla consider a design that would be a bit more inclusive of more traditional or "tasteful" interiors/exteriors, rather than be too polarizing, simply because that would lead to more sales. Having said that, I would never want a Tesla to not be minimalist, modern, or "futuristic".
I'm not sure why a car would be more desirable if it was more expensive (as posted above), but in my opinion, the main reason I paid a lot more for my Model S is simply because it is a better car. Assuming an X is mostly the same as my S, compared to an XC90 T8 -- it accelerates quicker and twice as fast to 60, uses no gas, has no emissions, has a better driver interface, and is ridiculously more fun to drive. Then there's over-the-air updates, having a full battery every morning with home charging, and autopilot, which is highly useable. Honestly, I like my T8 a lot especially its style and luxury -- but running on it's 18 miles of battery range, using its rear axles to put out 90 hp, then romping through a slew of shenanigans to activate/deactivate its ICE engine just to make it to 50 mph or up a hill seems a little antiquated; not to mention its low range (I guess about 330 miles, but not sure) due to smaller gas tank -- and this is all an improvement on my experience with the T6. The Tesla? Battery-powered, 250-300 miles of range on a single charge, 400-500 hp driving front/rear axles, instant torque, no engine sounds, no gas, superchargers up/down the coast -- pretty nice.
There's a reason why MB, VW/Audi, Volvo are clamoring to add electric and self-driving to their range of vehicles and there's a reason why they keep releasing press releases about some date in the future that they'll do it (2020 seems to be the common theme) -- because BEV are and Tesla is doing it the best right now. You guys can nitpick all you want, but trust me I've got just as many stories and links about my previous ICE vehicles. My Tesla? Not so many stories, just fun and simple living. There is negative press (many which are thereafter debunked) and forum rants that seem to come out every other week about Tesla or it's cars -- trust me, the impact that these have on the daily lives of the vast majority of owners is next to nothing and customer satisfaction surveys echo the same thing. I speak from personal experience, involvement in forums (just like everybody else here), and talking with many fellow owners over the past 4 years. And if (knock on wood) something were to sideline my car, I'm a big boy, and can pick up my phone and get an Uber or roadside, just like I did when my T8 refused to change over to ICE power from battery.
Why did I lease a T8 then? imo, it's the best traditional ICE SUV for my use case (suburbs, family hauler, Costco, lol) and I'd prefer to not spend more than $100k on 2 cars. A used Model X 90D can be purchased at about $85k now, and that is looking more feasible.