We have had our MX75D for 9 months and 9k miles. It took us through a hard winter without snow tires, and occasionally pulls my neighbor's small utility trailer for hauling smelly, dirty or large objects. If you buy a Model X I strongly recommend the towing package, which is also available as a aftermarket accessory.
We just made a trip from Idaho to Colorado and back. We have made this trip many times in the past but this is the first time in a Tesla. Traveling by Tesla is different, but pleasant in a genteel way--we either take a walk, stop for a meal or read a book when we charge. We are semi-retired and I am an engineer. We aren't rich, but we don't want a second house or a horribly depreciating motor home--we'd rather stay in a quiet motel and let somebody else do the cleaning. So Tesla is our RV and primary mode of transportation, in addition to being the biggest splurge of our lives. It's better than acceptable in both categories. My wife went from a skeptic to an enthusiastic supporter. (see final paragraph) The reduced carbon footprint is an additional, and definitely not a negligible bonus.
It's a world of real, not ideal choices. I learned that a long time ago. If you expect ideal results you will live an unhappy life. Reviewers tend to be outliers in both directions, but in Tesla's case they tend to be biased toward the negative side. They seem often motivated by either confirmation bias or buyer's remorse and so I filter out the emotional content. If you look for it there is useful information in most posts. I read the forums for information, not confirmation of my feelings about the decision.
As Elon says, nothing is perfect, but we have only had problems, not PROBLEMS. (Screw in tire, etc) Our service tech is a gem, but we hardly ever see him-- so far just little things like a lost cosmetic lug nut cap, cheerfully delivered to our home. Tesla has treated us better than fairly, omitting the usual occasional bureaucratic snafu.
If I had it to do over again I would have ordered the X with a 100 kWh battery. The largest battery when we bought the car was 90 kWh, and I still think the difference between 75 and 90 is not large enough to justify its additional cost. In engineering terms, the cost benefit curve is not a straight line. In the meantime the increased number of superchargers has alleviated that problem.
Put me in the very satisfied, would-do-it-again column. I consider myself objective enough and have owned the car long enough that I'm not primarily motivated by either buyer's remorse or confirmation bias.
While in Denver we picked out a red Model S for my wife. That's our conclusion, and our vote regarding Tesla as a real world choice.